Question 206567
d=vt so t=d/v

Let x=sara's speed
Then x+20=craig's speed

225/x=325/(x+20)

Multiply both sides by x(x+20)
225(x+20)=325x
225x+4500=325x
100x=4500
x=<u>(Sara's speed) 100 mi/hr</u>
x+20=<u>(Craig's speed) 120 mi/hr</u>

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