The file cost twice as much as the stapler. Jack bought 1 file and 5 staplers for $14.
- How much did one stapler cost?
- How much did one file cost?
(a)
Cost of the stapler = 1 u
Cost of 5 staplers = 5 x 1 u = 5 u
Cost of the file = 2 x 1 u = 2 u
Total cost = 5 u + 2 u = 7 u
7 u = 14
1 u = 14 ÷ 7 = 2
Cost of 1 stapler
= 1 u
= $2
(b)
Cost of 1 file
= 2 u
= 2 x 2
= $4
Answer(s): (a) $2; (b)$4