A stapler cost $1.50. A file cost $13.50 more than the stapler. Linda spent $210 on such staplers and files. She bought four times as many staplers as files.
- How many files did Linda buy?
- How much money did Linda spend on the staplers?
|
Staplers |
Files |
Total |
Number |
4 u |
1 u |
|
Value |
1.50 |
15 |
|
Total value |
6 u |
15 u |
210 |
(a)
Cost of a file
= 13.50 + 1.50
= $15
Total cost of staplers and files
= 6 u + 15 u
= 21 u
21 u = 210
1 u = 210 ÷ 21 = 10
Number of files that Linda bought
= 1 u
= 10
(b)
Amount that Linda spent on staplers
= 6 u
= 6 x 10
= $60
Answer(s): (a) 10; (b) $60