Andrew wants to buy some pencils of the same price. If she buys 5 pencils, she will have $7.50 left. If she buys 7 pencils, she will short of $1.80.
- How much does each pencil cost?
- How much does Andrew have?
(a)
Difference in the number of pencils
= 7 - 5
= 2
Amount that Andrew needs to buy 2 pencils
= 7.50 + 1.80
= $9.30
Cost of each pencil
= 9.30 ÷ 2
= $4.65
(b)
Amount that Andrew has
= 5 x 4.65 + 7.50
= $30.75
Answer(s): (a) $4.65; (b) $30.75