Mona has $27.05 in quarters and dimes. There are 152 coins. How many quarters are there?
X Qtrs
(152-x) Dimes
25x + 10(152-x) = 2705 Cents
25x + 1520-10x = 2705
15x = 2705 - 1520 = 1185
X = 79
(152-x) Dimes
25x + 10(152-x) = 2705 Cents
25x + 1520-10x = 2705
15x = 2705 - 1520 = 1185
X = 79