A pie cost twice as much as a cupcake at a nearby food outlet. Andy spent 16 of his money on some cupcakes and half of the remaining sum on 5 pies. He had $25 left.
- What was the cost of 1 cupcake?
- Ryan bought 3 pies and 2 cupcakes. How much did he spend altogether?
(a)
Fraction of Andy's amount left after buying the cupcakes
= 1 -
16 =
56 Fraction of Andy's amount spent on the pies
=
56 x
12 =
512 Fraction of money left
= 1 -
16 -
512 = 1 -
212 -
512 =
512 Amount that Andy had left = 5 u
5 u = 25
1 u = 25 ÷ 5 = 5
Amount that Andy had left = Amount spent on 5 pies
Cost of 5 pies = $25
Cost of 1 pie = 25 ÷ 5 = $5
Cost of 1 pie is 2 times as much as the cost of 1 cupcake.
Cost of 1 cupcake
= 5 ÷ 2
= $2.50
(b)
Cost of 3 pies and 2 cupcakes
= 3 x 5 + 2 x 2.50
= 15 + 5
= $20
Answer(s): (a) $2.50; (b) $20
