A stapler cost $1.50. A file cost $12.50 more than the stapler. Cindy spent $120 on such staplers and files. She bought four times as many staplers as files.
- How many files did Cindy buy?
- How much money did Cindy spend on the staplers?
|
Staplers |
Files |
Total |
Number |
4 u |
1 u |
|
Value |
1.50 |
14 |
|
Total value |
6 u |
14 u |
120 |
(a)
Cost of a file
= 12.50 + 1.50
= $14
Total cost of staplers and files
= 6 u + 14 u
= 20 u
20 u = 120
1 u = 120 ÷ 20 = 6
Number of files that Cindy bought
= 1 u
= 6
(b)
Amount that Cindy spent on staplers
= 6 u
= 6 x 6
= $36
Answer(s): (a) 6; (b) $36