At a garage sale, Zoe spent $60 on 1 hat and 2 pairs of shoes.If she spent $9 more on each pair of shoes than on the hat, how much did Zoe spend on the shoes?
cost of hat ---- x
cost of shoes ---- x+9
x + 2(x+9) = 60
solve for x
cost of shoes ---- x+9
x + 2(x+9) = 60
solve for x