Rohit takes 2 hours to reach the airport travelling at the speed of 40 km/h. How fast should he drive the car to reach the airport in 80 min?

80 kmph

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60 kmph

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90 kmph

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None of these

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Solution

The correct option is B 60 kmph
As the speed increases, the time taken decreases. So,the time and speed are inversely proportional.

Speed x time = constant

2 x 60 x 40 = 80 x t

t = 60

So, Rohit should drive the car at 60 km/h

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