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Two cars are moving in the same directio...

Two cars are moving in the same direction with the same speed `30 km//hr`. They are separated by a distance of `5 km`, the speed of a car moving in the opposite direction of it meets these two cars at an interval of `4` minutes, will be.

A

`45 km/hr.

B

60km/hr

C

105km/hr

D

None

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The correct Answer is:
A
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ALLEN-MOTION IN A PALNE-EXERCISE-2
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  19. An iron ball and a wooden ball of the same radius are released from a ...

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