Henry wants to buy some pencils of the same price. If she buys 5 pencils, she will have $7.90 left. If she buys 7 pencils, she will short of $1.70.
- How much does each pencil cost?
- How much does Henry have?
(a)
Difference in the number of pencils
= 7 - 5
= 2
Amount that Henry needs to buy 2 pencils
= 7.90 + 1.70
= $9.60
Cost of each pencil
= 9.60 ÷ 2
= $4.80
(b)
Amount that Henry has
= 5 x 4.80 + 7.90
= $31.90
Answer(s): (a) $4.80; (b) $31.90