Question

a car moves towards east at a speed of 40km/hr. Another car starts at the same time from the same point and moves towards west at a speed of 45km/hr. in how much time the distance between the two cars will be 510km?

Answer 1

A car moves towards East at a speed of = 40km/hr.
Another car moves towards West at a speed of = 45km/hr.
So distance between them in 1 hour = (40+45) km = 85 km.
Time in which the distance between the two cars will be 510 km = (510/85) hours = 6 hours.
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Answer 2

Your answer is 6 hr

For step by step explanation, go through the pic uploaded....

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