A man can row at 30 km/hr in still water. If the rate of current is 5 km/hr, find the average speed of man if he rows a certain distance upstream and returns back to starting point.
At what rate of interest per annum will the simple interest on a sum of money be 25% of the principal in 5 years?
A certain sum of money amounts to Rs 6300 in 5 years at % simple interest per annum. Find the sum.
A man can row 20 km downstream in 4 hours and 9 km upstream in 3 hours. Find the speed of man in still water.
Simple interest on a sum is 25% of the principal and the number of years is equal to rate percent per annum. Find the rate of interest.
A sum becomes Rs 1323 in 2 years and Rs 1389.15 in 3 years. Find the sum if the interest is compounded annually.
A certain sum of money amounts to Rs 880 in 2 years at the annual rate of 5% simple interest. Find the sum.
Speed of the motorboat against the stream is 12 km/hr. and speed with the stream is 18 km/hr. Find the speed of motorboat in still water.
Find the time in which a motorboat can cover 128 km against the stream when the rate stream is 4 km/hr and speed of the motor boat with the current is 20 km/hr.
A swimmer can swim 9.6 km/hr in still water. He takes twice the time to swim upstream than to swim downstream. Find the speed of the stream.
