questionFromString.label: IBPS RRB PO Mains 2017

A train is 216 m long. It crosses a platform in 19 seconds with speed 21 m/s. If some 21 m long boxes are added in train and it crosses the same platform, then it takes 26 seconds to cross the platform at the same speed. How many boxes were added to the train?

1:
7
2:
10
3:
12
4:
5
5:
8
solution.label:
chapterName.label: Problems on trains

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IBPS RRB PO Mains 2017

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