SOLUTION: Greg drove at a constant speed in a rainstorm for 280 miles. He took a break, and the rain stopped. He then drove 215 miles at a speed that was 8 miles per hour faster than his pre

SOLUTION: Greg drove at a constant speed in a rainstorm for 280 miles. He took a break, and the rain stopped. He then drove 215 miles at a speed that was 8 miles per hour faster than his pre

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Question 855946: Greg drove at a constant speed in a rainstorm for 280 miles. He took a break, and the rain stopped. He then drove 215 miles at a speed that was 8 miles per hour faster than his previous speed. If he drove for 13 hours,the cars speed for each part of the trip?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
r*t=d
r*a=280
(r+8)*b=215
a+b=13
a = 8, b = 5, r = 35 r+8=43
check
35*8=280
ok
check
43*5=215
ok

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