Amelia wants to buy some files of the same price. If she buys 4 files, she will have $7.30 left. If she buys 8 files, she will short of $2.90.
- How much does each file cost?
- How much does Amelia have?
(a)
Difference in the number of files
= 8 - 4
= 4
Amount that Amelia needs to buy 4 files
= 7.30 + 2.90
= $10.20
Cost of each file
= 10.20 ÷ 4
= $2.55
(b)
Amount that Amelia has
= 4 x 2.55 + 7.30
= $17.50
Answer(s): (a) $2.55; (b) $17.50