Stella wants to buy some files of the same price. If she buys 5 files, she will have $5.80 left. If she buys 8 files, she will short of $1.70.
- How much does each file cost?
- How much does Stella have?
(a)
Difference in the number of files
= 8 - 5
= 3
Amount that Stella needs to buy 3 files
= 5.80 + 1.70
= $7.50
Cost of each file
= 7.50 ÷ 3
= $2.50
(b)
Amount that Stella has
= 5 x 2.50 + 5.80
= $18.30
Answer(s): (a) $2.50; (b) $18.30