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Question

A person travels 285 km in 6 hrs. First he took a bus and travelled at the speed of 40 km per hr. In the second part of the journey, he took a bus and travelled at the speed 55 km per hr. What distance did he travel by train?



A

138.33 km

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B

172.5 km

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C

156 km

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D

142.5 km

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E

124 km

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Solution

The correct option is D

142.5 km


In this question, the alligation method is applicable for the speed.

time spent in bus : time spent in train=456:456=1:1Distance travelled by train=2852=142.5km


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