AP Police Constable Mains 17 Mar 2019 Solved Paper

Question : 69 of 200

Marks: +1, -0

A boat goes 30 km up stream and 44 km down stream in 10 hours. In 13 hours, it can go 40 km up stream and 55 km down stream. Then the speed of the boat in still water and that of the stream (in km/hr) are respectively