SOLUTION: Craig Drives 20 miles per hour faster than sara. in the same time that sara drives 225 miles, craig drives 325 miles. find the speed of each car

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Question 206567: Craig Drives 20 miles per hour faster than sara. in the same time that sara drives 225 miles, craig drives 325 miles. find the speed of each car
Answer by HyperBrain(694) About Me  (Show Source):
You can put this solution on YOUR website!
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=(Sara's speed) 100 mi/hr
x+20=(Craig's speed) 120 mi/hr
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HyperBrain!