SOLUTION: Andrew and Derek live in two different cities that are 575 km apart. One day they both left at the same time and drove towards each other, Andrew travelling 15 km/h faster than Der

Question 1019316: Andrew and Derek live in two different cities that are 575 km apart. One day they both left at the same time and drove towards each other, Andrew travelling 15 km/h faster than Derek. If they met after 5 hours, how fast was each travelling?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Andrew and Derek live in two different cities that are 575 km apart.
One day they both left at the same time and drove towards each other, Andrew travelling 15 km/h faster than Derek.
If they met after 5 hours, how fast was each travelling?
:
let d = D's speed
then
(d+15) = A's speed
:
When they meet, the total distance they have traveled = 575 mi
Write a simple distance equation; dist = time * speed
:
D's dist + A's dist = 575
5d + 5(d+15) = 575
5d + 5d + 75 = 575
10d = 575 - 75
10d = 500
d = 500/10
d = 50 mph is D's speed
:
I'll let you find A's speed

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