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Q.

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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a

4:5

b

5:4

c

7:6

d

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=distancetime
So, the speed of the bus is 1282=64 kmph.
So, the speed of the train is 2403=80 kmph.
The ratio of their speed is 6480=45.
Hence, the required ratio is 4:5.
The correct option is 1.
 
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