Braingle: '100 Yard Dash' Brain Teaser

100 Yard Dash

Math brain teasers require computations to solve.

Puzzle ID:	#4614
Fun:	(2.7)
Difficulty:	(1.45)
Category:	Math
Submitted By:	bobbrt

Bill and Ted race each other in a 100 yard dash. Bill wins by 10 yards. They decide to race again, but to make things fair Bill starts 10 yards behind Ted. If they both run exactly the same speed as before, who wins the race?

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Comments

watupchicks

Jun 19, 2002

dont get me wrong it is a good thought out teaser just the answer should be thought out just a lil bit more ok look if ted is only running 90 yards in the second race and bill is running 100 yards (just for and example it could be ted is running 100 and bill is running 110 but its easier this way)so if it takes bill to run 100 yards by the time that ted runs 90 yards wouldnt they come in at the same time??? so the answer should be it would be a tie right?

bobbrt

Jun 19, 2002

Sorry - I guess I didn't make it clear that in the second race Ted is still running a 100 yard race and Bill is running 110 yards. At the point that Ted has run 90 yards (and Bill has run 100), they will be neck and neck. Since Bill runs faster, he will finish the last 10 yards faster than Ted and will win. You're right - If Ted runs 90 yards and Bill runs the 100, they will end in a tie.

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