Jerry wanted to buy a pair of shoes. During a sale, he saw a white pair of shoes on
sale at 15% discount and a black pair of shoes at 20% discount. Both pairs of
shoes were selling at the same price before the discount. To buy the white palr
Jerry would need $2.50 more than what he had. Jerry bought the black pair of
shoes and had $2 left after that.
a) How. much, did the pair of white shoes cost before the discount?
b) How much money did Jerry have at first?
original cost of each pair of shoes ---- x
amount of money Jerry had ---- y
white shoes: y - .85x = -2.5
black shoes: y - .8x = 2
subtract:
.05x = 4.5
x = 90
sub into y - .85x = 2
y - .8x = 2
y = 74
Use my definitions to state your conclusions.