O-Level Math D May June 2020 Paper 2 4024/21

[@hasibanam3931]

I think you did a mistake on q:7b(ii). It said find QRS but u did QSR. So how to find QRS? TIA...

[@OALevelMathematics]

oh yes, you are right: it's an easy fix - since you know the angle QSR = 32 and Triangle QSR is isoceles -> SQR = 32 and hence we have QRS as the 3rd angle of the triangle which is 180 - 32 -32 = 116

[@saranaeem1859]

add 32 and 32 and subtract by 180

[@farcryfootballskills6519]

@@saranaeem1859 can u please tell that when he applied compumd intrest formula why he divided rate over 100

[@OALevelMathematics]

@@farcryfootballskills6519 rate is a percentage

[@xavier9577]

He just completed this paper as if it is his breakfast...

[@FreeFiregamer-ud8xx]

😂

[@nafechowdhury5267]

i did not know such videos exist. Thanks a lot, brother. This has helped me a lot

[@OALevelMathematics]

Glad it helped

[@bigbadonkadonk6282]

Me: watches this video to understand maths Everyone at the exam hall: ........

[@darshinig9574]

Thank you very much Sir, watching your videos on a regular basis. It really helps for revision, specially for mocks.

[@hayley2295]

Oooh, I didn't know that we could find the centre of enlargement in 2 c) with the matrix. I always drew the enlarged shape and found it. So thank you for that! :)

[@hayley2295]

Just a small question regarding this. If the scale factor is 2 7 1 2 does it mean that centre of enlargement is 7,1? Or 1,7?

[@mrfantastic3767]

Bro thx a lot this helps greatly Keep up the good work love u man for this

[@OALevelMathematics]

Glad it helped

[@mantosh56]

THANKS FOR GOING THROUGH ALL THESE QUESTION...WAS REALLY HELPFUL FOR MY EXAMS!!! 😥

[@aarmishgilani7589]

At 26:05 where did 1.3 came from?

[@yumnakhan6251]

You, solving all the questions im struggling with, is really helpful, thnku sir.

[@sbdanimations821]

you deserve more than 10.9k subscribers. thanks man

[@hulkbelowall9532]

OMG THANKS I CAN'T STRESS HOW MUCH YOU HELPED ME🗿🗿🗿🗿 my O levels are in this oct so Pray me luck!!!

[@loat1]

how were they

[@krishakrishna4484]

how does 30 percent become 1.3 ? for q5)c)ii)

[@krishakrishna4484]

also in 7a) why don't we minus value of 135 from 360 ?

[@ffarzanah1725]

yessss

[@ratneswaridas8985]

Can you explain 5 c(2) in more details please?Why did u do 48*1.3(0.7)?

[@OALevelMathematics]

So we know that one carton has 80 bars. 1) 3/5 of the bars are sold at a profit of 30% 3/5 (80) = 48, so we sold 48 bars at a profit of 30% Now, according to the question, the cost of 1 bar is $0.70 Question - what is the price that we are selling for a 30% profit? The way we look at it is: cost (100%) + profit (30%) = Selling price (130%) . Now 130% = 130/100 = 1.30 1.30 - this number means that the selling price is 1.3 times more than the cost So, selling price is 1.3(0.7) and since we sold 48 bars, we do 48 x 1.3(0.7) = 43.68 So that is one way of doing that part. 2) Other longer way to find the selling price. 30% of 0.70 = 0.21, so the selling price is 0.21 + 0.70 = 0.91 Then we do 48 x 0.91= 43.68

[@skrrrrrr3797]

41:00 you made a mistake, you were supposed to find angle R not angle S, but I just want thank you for helping me with these question papers

[@saadhamid923]

In Q 7 you have to find QRS

[@aarmishgilani7589]

In Q 7 why the TQS is not 32 ! Why we didn't applied the rule of alternate angle??

[@khanjarwar7498]

In question 4(c),how we will solve for the value of P, if it is not written, the value of Time, as 2 or 3 but as 4,5 or 7

[@OALevelMathematics]

my apologies, I didn't understand your question. Would it be possible to clarify your question?

[@khanjarwar7498]

@@OALevelMathematics I mean like,as in question in compound interest the time is 3 years,so for the value of rate,you take cube root on both sides of equation.how will we solve this,if it will not be 3,e.g 5,as we can't take cube root of it

[@OALevelMathematics]

@@khanjarwar7498 Oh I see. What is cube root really? for example. 3√27 = 3, so it is (27)^(1/3). So same way. if time was 5, you would just have to apply the power of (1/5) Hope this helps

[@khanjarwar7498]

@@OALevelMathematics Yes I understand, thank you so much. I'm proud of teacher like you,who is still available to guide student for cie which are coming soon.

[@alishbakhan2832]

Hello, can you please tell how do you know its a straight line in Q6.a(iii)

[@OALevelMathematics]

in the form of y= mx +c

[@Mclignant]

Hello! Sir how did we know that we have to multiple by 6 (and not any other number) in order to make the base same/90 at 49:21 ? (Q9)

[@OALevelMathematics]

You can use your calculator: 90 divide by 15 is 6

[@Mclignant]

@@OALevelMathematics oh okay , ty :D

[@tonightwithhamdullah5835]

Sir at 2650 why would u not calculate profit 30 percent by mulitplying by cost 0.5 rather by the selling price already ???

[@OALevelMathematics]

So we know that one carton has 80 bars. 1) 3/5 of the bars are sold at a profit of 30% 3/5 (80) = 48, so we sold 48 bars at a profit of 30% Now, according to the question, the cost of 1 bar is $0.70 Question - what is the price that we are selling for a 30% profit? The way we look at it is: cost (100%) + profit (30%) = Selling price (130%) . Now 130% = 130/100 = 1.30 1.30 - this number means that the selling price is 1.3 times more than the cost So, selling price is 1.3(0.7) and since we sold 48 bars, we do 48 x 1.3(0.7) = 43.68 So that is one way of doing that part. 2) Other longer way to find the selling price. 30% of 0.70 = 0.21, so the selling price is 0.21 + 0.70 = 0.91 Then we do 48 x 0.91= 43.68

[@tonightwithhamdullah5835]

@@OALevelMathematics U are love and the new mother Teresa

[@hadibinharoon6605]

Thanks bro ,it really helps alot!

[@aasiakhan5394]

Sir how did you know it's X=-3 in question 6?

[@q333ja]

At 17:50 why didnt u use the formula p (1+r/100) = Main thing is why didn't u divide or is this another formula? Beacuse u wrote 1+r but u didn't divide Thanks!

[@OALevelMathematics]

It is the same formula. I just multiplied by 100 at the end to get the percentage.

[@Kickskolori]

Why did u divide by 2 in ques 9 partc

[@hasana6298]

Sir in question 10 part b can we use tan opposite upon adjacent

[@jannatulferdoussarah]

R u chinese or korean?

[@arlosgaming1387]

Sir how did you obtain 1.3 in Q 5 part c(ii) 😅???

[@OALevelMathematics]

So we know that one carton has 80 bars. 1) 3/5 of the bars are sold at a profit of 30% 3/5 (80) = 48, so we sold 48 bars at a profit of 30% Now, according to the question, the cost of 1 bar is $0.70 Question - what is the price that we are selling for a 30% profit? The way we look at it is: cost (100%) + profit (30%) = Selling price (130%) . Now 130% = 130/100 = 1.30 1.30 - this number means that the selling price is 1.3 times more than the cost So, selling price is 1.3(0.7) and since we sold 48 bars, we do 48 x 1.3(0.7) = 43.68 So that is one way of doing that part. 2) Other longer way to find the selling price. 30% of 0.70 = 0.21, so the selling price is 0.21 + 0.70 = 0.91 Then we do 48 x 0.91= 43.68

[@lavnishjankoo5225]

@@OALevelMathematics thx I needed that

[@usaidtahir8392]

@@OALevelMathematics thanks a lot sir.. I can't understand till read this comment..i am very confuse before that❤️

[@shahzadahmed2903]

@@lavnishjankoo5225 me too

[@tasinx27]

sir do you have add maths solutions if so please give me the link please

[@OALevelMathematics]

check playlist

[@tasinx27]

Sir there is a mistake in 9 b it's 12/90 in the mark scheme can you explain how????

[@OALevelMathematics]

Is it a mistake? 2/15 is the same as 12/90 try to simplify the fraction 12/90

[@fadiladeel9424]

Thanks brother i was frustrated doing these questions 🤧

[@ghalibazad5961]

Please tell how you get 140% in question 5 part c (i)

[@Anonymous-dm6rj]

u from mauritius?

[@OALevelMathematics]

Yes I am!

[@nomore_joy]

I didn't understand how you got 1.3 in 5.c) (ii)

[@sampreasfernando614]

bro in this paper in question number 7ii you have made a mistake the answer is 116 degree

[@OALevelMathematics]

yes, it was addressed in the comment below

[@flightsimulatormauritius4875]

Awesome work do you 4024/12 please?

[@OALevelMathematics]

check it out: kzbin.info/www/bejne/enO0i4Slqb2SgbM

[@yumnakamal3561]

Thankyou so much. It was really really helpful!!

[@tanveernundloll5153]

Thanks mate👀

[@chriskowlessur724]

Sorry to bother you,but as our Maths exam is near 27 may P1 and 01 june P2 could you please make a video about angle in circle like Page 13(b) please

[@OALevelMathematics]

If I understand, you will would like me to redo the circle question 13(b)?

[@chriskowlessur724]

@@OALevelMathematics Yeah and more question like this

[@Kat-ez5tp]

Love you!

[@Lala._sadii]

Sir can you teach phys Atp??! Please.!? Tomorrow's my paper. I love the way you explain each and everything.

[@raitamemes6525]

please make a video on percentage , and solve topical past papers.

[@alimajid8835]

Sir is this specimen paper of 2020

[@OALevelMathematics]

june 2020 paper 21

[@justiceleauge906]

I think that in the thumbnail you have written 2010 whereas it is 2020 paper. :)

[@e-sellerstore9]

Thank you♥️

[@farcryfootballskills6519]

Why u took radius 80 and not 45

[@OALevelMathematics]

timestamps? (so i can help you)

[@farcryfootballskills6519]

@@OALevelMathematics u dont explain in brief .how to do in brief.a question arise in mind why he did like this ??? U dont explain

[@baghdadassupwat2185]

Thank you much sir. these vedios helped alot 🙏. Sir your voice is really low can you fix this problem? or buy a new mic.

[@OALevelMathematics]

I understand. I usually record these videos after work and I think I maybe tired in this video 😅 (Maybe a new Mic in the near future)

[@ranaali4836]

Very nice video thanks i like.

[@OALevelMathematics]

Thank you too

[@iahmedhabib1152]

34:02 very clever you are dont take third last equation

[@muhammadmujtaba2577]

I whant to do maths like you like for you it's not a deal

[@aryannair18]

I guess you have made a mistake in q 7bii please clarify

[@OALevelMathematics]

Please read the pinned comment

[@MohammadAli-jl5js]

Plz can you explain o level vextors in a vedio

[@Whyiseveryusernametaken9]

This one is the easiest so far

[@freefreeandfree8989]

1 ggt pan conprn

[@krishnaNunhuck]

b to gopia man,aret lkl bro

[@sadikahaque7317]