Owen wants to buy some pencils of the same price. If she buys 4 pencils, she will have $6.40 left. If she buys 7 pencils, she will short of $1.10.
- How much does each pencil cost?
- How much does Owen have?
(a)
Difference in the number of pencils
= 7 - 4
= 3
Amount that Owen needs to buy 3 pencils
= 6.40 + 1.10
= $7.50
Cost of each pencil
= 7.50 ÷ 3
= $2.50
(b)
Amount that Owen has
= 4 x 2.50 + 6.40
= $16.40
Answer(s): (a) $2.50; (b) $16.40