Henry wants to buy some files of the same price. If she buys 5 files, she will have $7.40 left. If she buys 7 files, she will short of $1.90.
- How much does each file cost?
- How much does Henry have?
(a)
Difference in the number of files
= 7 - 5
= 2
Amount that Henry needs to buy 2 files
= 7.40 + 1.90
= $9.30
Cost of each file
= 9.30 ÷ 2
= $4.65
(b)
Amount that Henry has
= 5 x 4.65 + 7.40
= $30.65
Answer(s): (a) $4.65; (b) $30.65