Fun Evo Math Brain Teaser!!!
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Fun Evo Math Brain Teaser!!!
This is a variation of a brain teaser I was asked today at work:
Warrtalon hops in his Evo to head out on a road trip to David Buschur's shop for a retune. He gets halfway there and realizes his ECU is in Valet mode and he's only been averaging 40mph. He looks at his watch and says, "Damn, I wanted to do at least 80mph for the whole trip." He turns off Valet mode and heads out...
After having gone halfway at 40mph, how fast must Warrt drive in order to average 80mph for his whole trip to the shop?
Hint: It's not the obvious!
Warrtalon hops in his Evo to head out on a road trip to David Buschur's shop for a retune. He gets halfway there and realizes his ECU is in Valet mode and he's only been averaging 40mph. He looks at his watch and says, "Damn, I wanted to do at least 80mph for the whole trip." He turns off Valet mode and heads out...
After having gone halfway at 40mph, how fast must Warrt drive in order to average 80mph for his whole trip to the shop?
Hint: It's not the obvious!
This is a variation of a brain teaser I was asked today at work:
Warrtalon hops in his Evo to head out on a road trip to David Buschur's shop for a retune. He gets halfway there and realizes his ECU is in Valet mode and he's only been averaging 40mph. He looks at his watch and says, "Damn, I wanted to do at least 80mph for the whole trip." He turns off Valet mode and heads out...
After having gone halfway at 40mph, how fast must Warrt drive in order to average 80mph for his whole trip to the shop?
Hint: It's not the obvious!
Warrtalon hops in his Evo to head out on a road trip to David Buschur's shop for a retune. He gets halfway there and realizes his ECU is in Valet mode and he's only been averaging 40mph. He looks at his watch and says, "Damn, I wanted to do at least 80mph for the whole trip." He turns off Valet mode and heads out...
After having gone halfway at 40mph, how fast must Warrt drive in order to average 80mph for his whole trip to the shop?
Hint: It's not the obvious!
You said it wasn't that obvious.
Last edited by smokedmustang; Dec 27, 2006 at 11:43 AM.
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very f...in fast. speed of light.
cause goin 40mph. if he is exactly at 1/2 way. .... if he was goin 80 he would have been there already. he would be too late to go anyfaster.
if i understood the question right then my answer is correct.
cause goin 40mph. if he is exactly at 1/2 way. .... if he was goin 80 he would have been there already. he would be too late to go anyfaster.
if i understood the question right then my answer is correct.
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Also, distance doesn't matter, all you need to know is he averaged 40mph the first half, and has halfway to go.
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MyEvoDream and bomjoon are correct!
Since distance doesn't matter, just keep the ratio and plug in some numbers... assume the trip is 80 miles... if he's gone 40 miles (or X miles) at 40mph, he's driven for 1 hour. If his goal is to average 80mph over 80 miles (or 2X miles), then he only has 1 hour to do it. So... even if Warrt is WOT the rest of the way, he will average LESS than 80mph for the whole trip.
Since distance doesn't matter, just keep the ratio and plug in some numbers... assume the trip is 80 miles... if he's gone 40 miles (or X miles) at 40mph, he's driven for 1 hour. If his goal is to average 80mph over 80 miles (or 2X miles), then he only has 1 hour to do it. So... even if Warrt is WOT the rest of the way, he will average LESS than 80mph for the whole trip.
Last edited by recompile; Dec 27, 2006 at 11:48 AM.
My guess to the answer is 160.
Survey says XXXX WRONG
