A. 23 km/hr

B. 27 km/hr

C. 25 km/hr

D. None of these

A boat covers a certain distance downstream in 1 hour, while it comes back in 1 ½ hours. If the speed of the stream be 3 kmph what is the speed of the boat in still water?

Car A covered the distance of 448 km in 8 hours and Car B covered 110 km more than Car A in 9 hours. What is the ratio between the speed of Car A and Car B respectively?

If a man rows at the rate of 5 km ph in still water and his against the current is 3.5km ph, then The man’s rate along the current is:

In a 100 m race, A can give B 10 m and C 28 m. in the same race B can give

A train overtaken two persons walking along a railway track. The first one walks at 4.5 km/hr. the other one walks at 5.4 km/hr. the train needs 8.4 and 8.5 sec respectively to overtake them. What is the speed of the train if both the persons are walking in the same direction as the train