EXPLANATION: Banks channel money from savers to borrowers to lenders / investors. It is the job of the bank to receive money from savers and pay them interest for the amount of money they save with the bank. Simultaneously, banks invest these money to the lenders / investors which are commercial firms as loans from where they earn interest. The difference between the interest received by bank from investor and the interest paid to savers is the earning of the bank.
If temperature is held constant, the equation is reduced to Boyle's law. Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase.
