In a motorcycle race, one lap of the course is 650m. At the start of the race, Genna sets off 4 seconds after Tom does, but she drives her motorcycle 5m/s faster and finishes the lap 2.5 seconds sooner than he does.(adsbygoogle = window.adsbygoogle || []).push({});

a) Find the speed at which each of them is driving.

b) Find the tim etaken by each of them to cover the distance.

How I started this problem

Let x be Genna's time if she started at the same time

Genna

time =x

distance =650

speed = 650/x

Tom

time = x +2.5

distance =650 m

speed = x +2.5

then i did 650/x - 650/x+2.5 = 5m/s

this generated the wrong answers

here are the correct answers

a)Tom 20m/s Genna 25.0m/s

b) Tom 32.5 s Genna 6s

Help

thanks

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# Homework Help: Rational Expression Word Problem

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