Question #b3597

1 Answer
Kabir M.
Apr 26, 2017

9 seconds.

Explanation:

If the difference between the car's speed and the truck's speed is 40km/hr, 40 km is how much the car gains on the truck per hour. This is the same as 1 km/90 sec, which is the same as 100m/9 sec. In order to catch up to the truck, the car will take 9 seconds at its current speed.

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