If the average of a and b is 45, and the average of b and c is 35 then (a-c)=?

In what ratio must a grocer mix two varieties of tea worth Tk 60 per kg and 65 per kg so that by selling the m...

A man can row three-quarters of a kilometre (km) against the stream in 11.25 minutes and down the stream in 7....

A train can travel 50% faster than a car. Both start from point A at the same time and reach point B, 75 kilom...

In dividing a number by 585, a student employed the method of short division. He divided the number successive...

At present the total age of Rahim, Karim and Akkas is 81 years. what was their average age three years ago?

Two bus tickets from cit A to B and three tickets from city A to C cost Tk 77 but three tickets from city A to...