SOLUTION: the distance between two place on road A and B is 70 km. the A car starts from A and other from B. if they travel in the same direction, they will meet after 7 hours. if they tra
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Question 1095787: the distance between two place on road A and B is 70 km. the A car starts from A and other from B. if they travel in the same direction, they will meet after 7 hours. if they travel towards each other they will meet after 1 hour, then find their speed
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
= speed of the faster car, in km/h
= speed of the slower car, in km/h
EXPLANATION
When traveling towards each other,
they reduce the distance between them at a rate of , so
-->
If both cars travel in the same direction,
the distance between them will change (increase or decrease)
as a rate of .
If the faster car was running away from the slower one,
they would bm never meet,
so if they meet in 7 hours,
the faster car is chasing the slower one.
The distance between will be decreasing at a rate of
.
So, we have to solve the system
.
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