Rashed can stuff advertising circulars into envelopes at the rate of 45 envelopes per minute and Reena require a minute and a half to stuff the same number of envelopes. Working together, how long will it take Rashed and Reena to stuff 300 envelopes?

If the price of an item is increased by 10% and then decreased by 10%, the net effect on the price of the item...

If interest on a savings account is paid monthly at an annual rate of percent and if the interestis not reinve...

is equal to:

A certain machine produces 8 toys every 4 seconds. If the machine operates without interruption, how many toys...

If n and p are both odd numbers, which of following numbers must be an even number?

The some of daily income of P, Q and R is TK.90. If Q earns TK.10 more than P and R earns double of what Q ear...