Mathematics mcqs

the speed of a boat in still water is 5 km/hr, it can go 30km upstream and return downstream to the original point in 4 hours 30 min. the speed of the stream is-------?

the speed of a boat in still water is 5 km/hr, it can go 30km upstream and return downstream to the original point in 4 hours 30 min.

8 km/hr

10 km/hr

5km/hr

15 km/hr

the simple interest on rs.12000 at a certain rate of interest in five years is rs.7200. find the compound interest on the same amount for five years at the same rate of interest.

the simple interest on rs.12000 at a certain rate of interest in five years is rs.7200.

rs.3054.8

rs.3502.80

rs.3052.40

none of these

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