Elizabeth wants to buy some pencils of the same price. If she buys 5 pencils, she will have $3.90 left. If she buys 7 pencils, she will short of $2.30.
- How much does each pencil cost?
- How much does Elizabeth have?
(a)
Difference in the number of pencils
= 7 - 5
= 2
Amount that Elizabeth needs to buy 2 pencils
= 3.90 + 2.30
= $6.20
Cost of each pencil
= 6.20 ÷ 2
= $3.10
(b)
Amount that Elizabeth has
= 5 x 3.10 + 3.90
= $19.40
Answer(s): (a) $3.10; (b) $19.40