A man rows a certain distance along the stream and against the stream in 1 hour and 1.5 hours respectively . If the velocity of the current is 3 km /hr. what is the speed of a man in still water?

A milkman pays tk. 6.40 per liter of milk. He adds water and sells the mixture at tk. 8per liter. By doing thi...

A leading library charges c cents for the first week that a book is loaned and f cents for each day over one w...

Find the compound interest at the rate of 10% per annum for four yearss on the principal which in four years a...

A wheel rotates 10 times per minutes and moves 20 m during each rotation . How many feet does the wheel move i...

An Amount of tk. 366 is to be divided among P,Q and R in such a manner that Q gets two- third as much as P and...

On dividing an individual number by 342, we get 47 as remainder. If the same number is divided by 18, what wil...