The notebook cost five times as much as the file. Henry bought 1 notebook and 2 files for $14.
- How much did one file cost?
- How much did one notebook cost?
(a)
Cost of the file = 1 u
Cost of 2 files = 2 x 1 u = 2 u
Cost of the notebook = 5 x 1 u = 5 u
Total cost = 2 u + 5 u = 7 u
7 u = 14
1 u = 14 ÷ 7 = 2
Cost of 1 file
= 1 u
= $2
(b)
Cost of 1 notebook
= 5 u
= 5 x 2
= $10
Answer(s): (a) $2; (b)$10