In one hour, a boat goes 11 km along the stream and 5 km against the stream. The speed of the boat in still water (in km/hr) is :

Reena took a loan of Tk. 1200 with simple interest for as many years as the rate of interest. If she paid Tk....

At what rate of compound interest per annum will a sum of Tk. 1200 become Tk. 1348.32 in 2 years?

The length of a room is 5.5 m and width is 3.75 m. Find the cost of paying the floor by slabs at the rate of T...

In a 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by :

How many times do the hands of a clock coincide in a day?

A man buys Tk. 50 shares in a company which pays 10% dividend. If the man gets 12.5% on his investment, at wha...