A file cost $2.50. A stapler cost $13.50 more than the file. Usha spent $260 on such files and staplers. She bought four times as many files as staplers.
- How many staplers did Usha buy?
- How much money did Usha spend on the files?
|
Files |
Staplers |
Total |
Number |
4 u |
1 u |
|
Value |
2.50 |
16 |
|
Total value |
10 u |
16 u |
260 |
(a)
Cost of a stapler
= 13.50 + 2.50
= $16
Total cost of files and staplers
= 10 u + 16 u
= 26 u
26 u = 260
1 u = 260 ÷ 26 = 10
Number of staplers that Usha bought
= 1 u
= 10
(b)
Amount that Usha spent on files
= 10 u
= 10 x 10
= $100
Answer(s): (a) 10; (b) $100