Question

The distance between two places is 720 km. 2 cars starts
Simultaneously from A and B to wards each other, distance
between them after 7 hours is 9 km. If the speed of one
car is 10 km/h less than the speed of other car find
the speed of each car.​

Answer 1

Answer:

ANSWER

Let the speed of car B be x km/h.

Then, speed of car A =(x+7) km/h

Now, distance covered by car B in 2 hours=2x km and

Distance covered by car A in 2 hours =2(x+7) km

Given, distance between the cars after two hours is 34 km and distance between both the towns is 300 km.

So, distance covered by both the cars in two hours moving in opposite direction =300−34=266 km

⇒2(x+7)+2x=266

⇒2x+14+2x=266

⇒4x=252

⇒x=63 km/h

Therefore, speed of car B =63 km/h and speed of car A =63+7=70 km/h.

Answer 2

Answer:

I think this is the required answer hope it helps