Layla wants to buy some files of the same price. If she buys 5 files, she will have $4.30 left. If she buys 9 files, she will short of $1.90.
- How much does each file cost?
- How much does Layla have?
(a)
Difference in the number of files
= 9 - 5
= 4
Amount that Layla needs to buy 4 files
= 4.30 + 1.90
= $6.20
Cost of each file
= 6.20 ÷ 4
= $1.55
(b)
Amount that Layla has
= 5 x 1.55 + 4.30
= $12.05
Answer(s): (a) $1.55; (b) $12.05