A file cost $2.50. A pencil cost $13.50 more than the file. Jane spent $104 on such files and pencils. She bought four times as many files as pencils.
- How many pencils did Jane buy?
- How much money did Jane spend on the files?
|
Files |
Pencils |
Total |
Number |
4 u |
1 u |
|
Value |
2.50 |
16 |
|
Total value |
10 u |
16 u |
104 |
(a)
Cost of a pencil
= 13.50 + 2.50
= $16
Total cost of files and pencils
= 10 u + 16 u
= 26 u
26 u = 104
1 u = 104 ÷ 26 = 4
Number of pencils that Jane bought
= 1 u
= 4
(b)
Amount that Jane spent on files
= 10 u
= 10 x 4
= $40
Answer(s): (a) 4; (b) $40