Kwang deposits money in an account that earns 5% simple interest . he earned $546 in interest 2 years later . how much did he deposit ?

For simple interest, we first have to get the interest rate for two years. So we will assume that 5% is the interest rate per year. So for two years, his interest rate is 10%. So to get the initial deposit, we can use x as the principal interest. So we can have a formula that goes like this: 0.10x=546. So to solve for x, we just simply divide 546 and 0.10. The answer to that will be 5460. So 2 years ago, Kwang deposited 5460 as the principal amount. 

M< 5 = 80 , < 2 = 80, < 6= 100, < 3= 100, < 7= 80, < 4= 80, < 8= 100