A commercial bank is a bank<span> whose main business is deposit's and making loans. </span><span>Investment banks take </span><span>the purchase and sales of bonds, stocks and other </span><span>investments. </span> Hope this helped :)
60 minutes. Take how far it is above ground (20 m) and add it to the absolute value of how far it is below ground (340 m) to get 360 meters, which you divide by the rate of descent (6 m/min) to get 60 minutes.
