Sophia wants to buy some files of the same price. If she buys 3 files, she will have $5.80 left. If she buys 8 files, she will short of $2.70.
- How much does each file cost?
- How much does Sophia have?
(a)
Difference in the number of files
= 8 - 3
= 5
Amount that Sophia needs to buy 5 files
= 5.80 + 2.70
= $8.50
Cost of each file
= 8.50 ÷ 5
= $1.70
(b)
Amount that Sophia has
= 3 x 1.70 + 5.80
= $10.90
Answer(s): (a) $1.70; (b) $10.90