Layla wants to buy some files of the same price. If she buys 3 files, she will have $3.90 left. If she buys 5 files, she will short of $2.60.
- How much does each file cost?
- How much does Layla have?
(a)
Difference in the number of files
= 5 - 3
= 2
Amount that Layla needs to buy 2 files
= 3.90 + 2.60
= $6.50
Cost of each file
= 6.50 ÷ 2
= $3.25
(b)
Amount that Layla has
= 3 x 3.25 + 3.90
= $13.65
Answer(s): (a) $3.25; (b) $13.65