Jamie wants to buy some files of the same price. If she buys 3 files, she will have $3.50 left. If she buys 9 files, she will short of $1.30.
- How much does each file cost?
- How much does Jamie have?
(a)
Difference in the number of files
= 9 - 3
= 6
Amount that Jamie needs to buy 6 files
= 3.50 + 1.30
= $4.80
Cost of each file
= 4.80 ÷ 6
= $0.80
(b)
Amount that Jamie has
= 3 x 0.80 + 3.50
= $5.90
Answer(s): (a) $0.80; (b) $5.90