SSC Government Jobs Exams Numerical Ability Time Distance and Speed

In fog ,A train takes 4 minutes to cross a man who is walking at speed of 3km/h in the same direction .He could see train upto the distance of 100m in fog in the same time.Find speed of train.

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SSC Other Question

A and B can do a piece of work in 10 days. B and C can do it in 12 days. C can do it in 20 days. How long will A take to do it alone? For every Set of 19 kites sold , a vendor gives 1 kite extra ,free of cost . In order to give a discount of 10% , the number of extra kites he should give in a scale of 27 kites to the nearest integer is