Aubrey wants to buy some staplers of the same price. If she buys 4 staplers, she will have $5.80 left. If she buys 7 staplers, she will short of $2.30.
- How much does each stapler cost?
- How much does Aubrey have?
(a)
Difference in the number of staplers
= 7 - 4
= 3
Amount that Aubrey needs to buy 3 staplers
= 5.80 + 2.30
= $8.10
Cost of each stapler
= 8.10 ÷ 3
= $2.70
(b)
Amount that Aubrey has
= 4 x 2.70 + 5.80
= $16.60
Answer(s): (a) $2.70; (b) $16.60