Your work shift is 40% done, if you have 3 hours left, how long is your shift?

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[@MrMousley]

OK Your shift is 40% done .. so there is 60% still to go 3 hours is 60% .. which means that 1 hour is 20% and a full shift (100%) is therefore 5 hours

[@aryusure1943]

I don't know if you would qualify my method as "algebra" but I think it is. 60/100 times "x" = 3 I divide 3 by 60/100 and I get the answer: 5 hours.

[@kk6aw]

5 hours

[@russelllomando8460]

Woo hoo, got it. Good one, thanks.

[@Nahrwal17]

5 Hours

[@gerontodon]

This is how I did it - If 60% was 6 hours, then the whole shift would be 10 hours, but as 60% of the shift is half that amount, the whole shift must be 5 hours. Much simpler, but might not work so easily if the percentages weren't such round numbers.

[@davidgroover6178]

5 hours did it fast in my head but sounds right every hour=20%

[@sirtango1]

Done this one before even playing the video!

[@jim2376]

3 hours is 60% of the shift. Let x = hours of the shift. (0.6)x = 3. 3/0.6 = 5. Five hour shift. Doesn't take a lot of brain power, but it's good to keep your head in the game.

[@saltydogg]

If I worked 40% of my shift and have 3 hours left to work, I'd divide 3 by 60% ( the reciprocal of 40%), In my head (30 ÷ 6 = 5)

[@tomtke7351]

work shift is 40% done = 60% undone 3 hours left in shift [=seg.2] = 3hr/seg.2 [seg=>segment] 60%/seg.2 is to 3 hours/seg.2 or (60%/seg.2)÷(3hours/seg.2) =(60%/3hours)×(seg.2/seg.2) =20%/hour rate of work so = (40%/seg.1) ÷ (20%/hr) = (40%/20%) (hr/seg.1) = 2(hrs/seg.1) totaled: (2 hrs/seg.1)+(3 hrs/seg.2) = 5hrs/(seg.1+seg.2) = 5hrs/total shift

[@user-ri6rn7ti5h]

S0.40/3h=13h.1s (s+1h-13)

[@sonofabraham2085]

Thats what you call maths make difficult!! I solved this problem in less than 30 second [ did it MENTALLY ] while the tutor did the same maths in 16:49 mins. All you should do is use Cross multiplication Since 60% = 3 hours 100 % = X Solve for x 60*x = 100 *3 [cross multiply] then solve for x 60x =300 60×/60 =300/60 = 5 Answer = 5 hours

[@deograciousuwiragiye8429]

60%= 3hrs left Time of shift =3hrs/60×100=5hrs.

[@devonwilson5776]

Greetings. The entire work shift is 5 hours. Algebraically, we shall assume that the entire work shift is X hours. Now, moving forward, if we subtract 40% of the work already completed we are told that 3 hours remain. The expression to show the sum total of hours taken to complete the job is X-40X%=3, and 100X-40X=300, 60X=300. Finally, X=300/60=5 hours.

[@aryusure1943]

@devon Indeed! But the way I see it is that 3 hours is 60% of the shift. So 60/100 times "x" = 3. So you divide 3 by 60/100 and you get "X" = 5. I don't like to have too many moving parts if I don't need it. ;)

[@devonwilson5776]

@@aryusure1943 Greetings. We are saying the exact same thing, only different approaches. Blessings.

[@cocovanmeerendonk4118]

If it has 40% done , then 60% is left, so if 60% is three hours that means each hour is 20%, so 40% is 2 hours and sixty percent is 3 hours so the shift is 5 hours.

[@albertscamus27]

5 hour is the correct answer . 0.4x + 3 = x . X = 5 hour

[@chrissullivan40]

.6x = 3 X= 3/.6

[@olujimioladeinde7707]

5hrs

[@edwardmoran1739]

14 hours

[@colleencurrier1586]

5

[@kennethwright870]

3hrs/.6 = 5hrs

[@art.demirjian9721]

5 hours the entire shift!

[@user-gl7co5oi7d]

12 hrs

[@miraheil5521]

60% over 3 hours to 40% over X

[@Vipre-]

If 40% is done then 3hrs left equals 60% and 40% equals 2/3 of 3 or 2 which means the entire shift is 5hrs.

[@Afflux212]

How does 40% equal 2/3 of 3?

[@Vipre-]

@@Afflux212 Because 3hrs equals 60% of the shift 40% of the shift is equal to 2/3rds of 3hrs.

[@peterfrangenheim4955]

10 hrs

[@johnnyllooddte3415]

how long.. about 60% too long

[@deograciousuwiragiye8429]

5 hrs long.

[@user-ri6rn7ti5h]

0.40/3= 13.1 (x+1x-13)

[@williamlynch1929]

7.5 hrs.?

[@terryhanvey1518]

Mental arithmetic in seconds.

[@argentum530]

I cheated. I did it the easy way.

[@ryanwalter5824]

You cheated yourself

[@argentum530]

@@ryanwalter5824 Not really, why use extra steps when there is a simple solution? It isn't smarter to use the long way around when the shortcut is 100% accurate...

[@CFfff-qr7bx]

It's no wonder no one understands math anymore if this is how it's taught. This is 16 second problem described in 16 minutes. Do yourself a favor and go buy an algebra book from the early 1980's.

[@miraheil5521]

He is teaching and he is a good teacher.

[@bierbarrel]

Too long

[@deograciousuwiragiye8429]

5hrs

[@billhawkesworth990]

5hrs

[@user-ri6rn7ti5h]

So.40/3h 13h.1s (s+1h-13)

[@billhawkesworth990]

I did it in my head as it came over , lm old math was common sense

[@user-ri6rn7ti5h]

@@billhawkesworth990 so did I do it in my head not my other head 🗣️

[@derekborkent2899]

40/60×3+3=5