A pizza cost five times as much as a biscuit at a nearby eatery. Tom spent 14 of his money on some biscuits and half of the remaining sum on 3 pizzas. He had $27 left.
- What was the cost of 1 biscuit?
- Glen bought 3 pizzas and 5 biscuits. How much did he spend altogether?
(a)
Fraction of Tom's amount left after buying the biscuits
= 1 -
14 =
34 Fraction of Tom's amount spent on the pizzas
=
34 x
12 =
38 Fraction of money left
= 1 -
14 -
38 = 1 -
28 -
38 =
38 Amount that Tom had left = 3 u
3 u = 27
1 u = 27 ÷ 3 = 9
Amount that Tom had left = Amount spent on 3 pizzas
Cost of 3 pizzas = $27
Cost of 1 pizza = 27 ÷ 3 = $9
Cost of 1 pizza is 5 times as much as the cost of 1 biscuit.
Cost of 1 biscuit
= 9 ÷ 5
= $1.80
(b)
Cost of 3 pizzas and 5 biscuits
= 3 x 9 + 5 x 1.80
= 27 + 9
= $36
Answer(s): (a) $1.80; (b) $36
