Kelly had 474 in her checking account in june. She earns $138 in july and puts all of it in her account. How much money does kelly have in her checking account now?

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.