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A bus covers 128 km in 2 hours and a train covers 240 km in 3 hours. What is the ratio of their speeds?

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4:5

5:4

7:6

5:6

answer is A.

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Detailed Solution

Given that a bus covers 128 km in 2 hours and a train covers 240 km in 3 hours.

Speed = \frac{distance}{time}

So, the speed of the bus is

\frac{128}{2} = 64 kmph

.
So, the speed of the train is

\frac{240}{3} = 80 kmph .

The ratio of their speed is

\frac{64}{80} = \frac{4}{5}

.
Hence, the required ratio is 4:5.
The correct option is 1.

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