SOLUTION: one car travels 20 mph faster than another. whie one of them travels at 240 miles the other travels 180 miles. find each of their speeds
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Question 678699: one car travels 20 mph faster than another. whie one of them travels at 240 miles the other travels 180 miles. find each of their speeds
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
one car travels 20 mph faster than another.
while one of them travels at 240 miles the other travels 180 miles.
find each of their speeds
:
let s = speed of the slower car
then
(s+20) = speed of the faster
:
write a time equation; time = dist/speed
:
=
cross multiply
240s = 180(s+20)
240s = 180s + 3600
240s - 180s = 3600
60s = 3600
s = 3600/60
s = 60 mph the slower car
:
You can find the speed of the faster car, check to see if their times are equal
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