A stapler cost $3.50. A notebook cost $15.50 more than the stapler. Eva spent $363 on such staplers and notebooks. She bought four times as many staplers as notebooks.
- How many notebooks did Eva buy?
- How much money did Eva spend on the staplers?
|
Staplers |
Notebooks |
Total |
Number |
4 u |
1 u |
|
Value |
3.50 |
19 |
|
Total value |
14 u |
19 u |
363 |
(a)
Cost of a notebook
= 15.50 + 3.50
= $19
Total cost of staplers and notebooks
= 14 u + 19 u
= 33 u
33 u = 363
1 u = 363 ÷ 33 = 11
Number of notebooks that Eva bought
= 1 u
= 11
(b)
Amount that Eva spent on staplers
= 14 u
= 14 x 11
= $154
Answer(s): (a) 11; (b) $154