I figured the speed of the truck was 100%. The car's speed was 115% of that of the truck. 82/1.15 = 71.30
@theancient72319 ай бұрын
Exactly the same way I saw the solution.
@glennarmstrong78919 ай бұрын
Add me to this list. Much easier.
@Chewy75759 ай бұрын
This is exactly the way I did it.
@tomtke73519 ай бұрын
the key here is percent up and down are different. If I mark up a product by 20%, then to get back to original means marking down new price by 16.7%. $1.00 up 20% = $1.20 $1.20 down 16.7% = $1.00 $1.00 up 15% = $1.15 $1.15 down 13% = $1.00 C = car speed T = truck speed this problem: C = T × (1.15) where C = 82 mph 82mi/hr = T × 1.15 T = 82÷1.15 = 71.30 mph Verify => C = T × 1.15 82 = ? 71.30 × 1.15 82 =❤ 81.995 ✔️
@davidfalgout73049 ай бұрын
tomtke..... 81.995 does not = 82...... why not?
@troymckoy1139 ай бұрын
Thank you. I have always had trouble with this.
@tomtke73519 ай бұрын
@@davidfalgout7304 71.3043478261 is a more precise answer. where, now, 71.3043478261 × 1.15 = 82
@thechosenone31979 ай бұрын
Dividing 82 by 1.15 gives you the same answer. 😎
@parkerparker90929 ай бұрын
I really enjoy your videos. I made the exact mistake that you predicted. The way you explain things is a great example of attention to detail. Thank you for your content. Keep up the good work.
@scottanderson63099 ай бұрын
Wish there were more ads during this. I almost had a complete thought before another started.
@bluejedi7239 ай бұрын
This is why I'm bad at math problems. I see something like this and instead of figuring out to solve it, the first thing out of my mouth is: why are we going 82MPH? Is this a pickup truck or semi truck? Does driver have proper CDL?
@ginasmitasin4799 ай бұрын
My thought was EVERYONE IS DRIVING OVER THE SPEED LIMIT!
@jimafton56599 ай бұрын
Driving on the German auto bann
@devonwilson57769 ай бұрын
Greetings. The answer is 71.3 MPH. Now, we will assume that the Truck's speed is X MPH. Moving forward, the car's speed will be the Truck's speed plus 15% of the Track's speed. That is X+15X%. Additionally, we are told that the Car's speed is 82 MPH. Therefore, we will equate the speeds of the car to get X+15X%=82, and 100X+15X=8,200, 115X=8,200 from which it is determined that X =71.3 MPH, rounded.
@Sailor376also9 ай бұрын
.82 X 85 69.7 The 'error' here,, nearly every 'governed' truck is speed set to 67 mph. Or per the reading of the problem,,, read it three times,, 82 divided by 115 equals, .713 X 100 equals 71.3 mph. The writing of the problem would lead me to believe the 71.3 (Must be a privately owned,,,, Peterbilt. 589)
@shelbysanders84669 ай бұрын
Truck driver math. Lol
@Sailor376also9 ай бұрын
@@shelbysanders8466 Laughing,, Yep !
@MrMousley9 ай бұрын
If the car is the one travelling 15% faster that means that 82 mph is 115% So, if we call the speed of the truck 1X that means that 1X + 0.15X = 82 1.15X = 82 X = 82/1.15 X = 71.3 71.3 mph
@glenbox51039 ай бұрын
69.7 mph is the trucks speed. If the car is running 82 mph .
@li3586909 ай бұрын
82 : 1.15 = 71.30
@jsEMCsquared9 ай бұрын
82 you dont get results until the test is tested. They're both going 82 the car gaining a percentage is only gained by using more energy.
@danieldaigle39809 ай бұрын
82 miles an hour is 100% so each percent is worth 0.82 x 15 means 15% = 12.3 subtract that from your 82 the truck would be traveling at 69.7 I could be wrong not educated
@ngiallag27929 ай бұрын
i thought it was 69.7 (8.2 mph is 10%) and half that is (4.1 mph thats half of 10% (5%) so 82 minus 12.3 (12.3 is the 8.2 + 4.1 mph) so 82 mph minus the 12.3 is the 69.7 mph right !!
@nationaldemocracyendeavorm74439 ай бұрын
No John! Your interpretation is wrong. The 15% is in relation to 82mph and not 69.7mph
@kennethwright8709 ай бұрын
82mph=1.15*truck mph, so truck mph= 82mph/1.15
@mustafaalshaikh10619 ай бұрын
69.7
@TheSalMaris9 ай бұрын
multiple stars for me- 82/1.15= 71.3
@davedeatherage49029 ай бұрын
Thank you sir.
@floydshelton2829 ай бұрын
IMHO the explanation in video is wrong. If cars speed is 15% faster than truck, to get from truck to car speed you would multiply by 1.15 (ie increase truck speed by 15 %) to get back again, simply divide by 1.15..So truck speed is 82/1.15= 71 mph (approx)
@joshcaldwell54969 ай бұрын
71.3MPH
@russelllomando84609 ай бұрын
got it, good one, thanks.
@paulhaye9 ай бұрын
71.30.
@alcorgarcia6196 ай бұрын
82÷1.15≈71.3
@Raindragon49 ай бұрын
68.7
@notreallydavid9 ай бұрын
First comma on the chalkboard is effecting a comma splice - baaaaaaad. Should be a semicolon or a period (or, where I am, a full stop).
@user-fj9xk1px1v9 ай бұрын
94.3
@majon3229 ай бұрын
I would have thought 82 x .15 = 12.3 82 - 12.3 = 69.7
@kennethwright8709 ай бұрын
82mph/1.15 = 71.3mph
@davidfalgout73049 ай бұрын
81.995 does not = 82. 82 mph is 82mph....period! Something is still wrong. I did the 69.7 answer, then checked it like you did and saw that was not correct either. So explain why the answer does not add up to the 82!
@mustafaalshaikh10619 ай бұрын
82x85%
@gbham65599 ай бұрын
94.3 miles.
@user-ri6rn7ti5h9 ай бұрын
64milies per hour or 67milies per hours
@deograciousuwiragiye84299 ай бұрын
69.7 km/h
@user-ri6rn7ti5h9 ай бұрын
(82÷15)= =6.2 (x+2x-6)
@thomasfugitt34619 ай бұрын
70.13 with a headache hard to figure
@johnpyke32109 ай бұрын
Yawn. First, it is MathS!!! Second, don't confuse the student with all the condescending patter.
@mikemassey74039 ай бұрын
About 70 miles an hour.
@williamkirkconnell73069 ай бұрын
71
@erikneyra9 ай бұрын
69.70 mph
@jimafton56599 ай бұрын
94.3 mph
@TheBikerDodge9 ай бұрын
This guy gets his own questions wrong.
@omdhandharmeshomhindusdhan75169 ай бұрын
70.3 miles fast.
@saberconstruction72249 ай бұрын
69.7/.85=82?
@Charlie-os4gk9 ай бұрын
70 MPH
@atokaye97699 ай бұрын
Useful opportunity to juggle our tired brain cells but could you keep the talk to a minimum! The intro could be minimal ; you will still receive the perks😊
@dragonite71599 ай бұрын
You talk waaaaaay too much. Couldn't get to the end.