A notebook cost $3.50. A pen cost $15.50 more than the notebook. Sarah spent $182 on such notebooks and pens. She bought twice as many notebooks as pens.
- How many pens did Sarah buy?
- How much money did Sarah spend on the notebooks?
|
Notebooks |
Pens |
Total |
Number |
2 u |
1 u |
|
Value |
3.50 |
19 |
|
Total value |
7 u |
19 u |
182 |
(a)
Cost of a pen
= 15.50 + 3.50
= $19
Total cost of notebooks and pens
= 7 u + 19 u
= 26 u
26 u = 182
1 u = 182 ÷ 26 = 7
Number of pens that Sarah bought
= 1 u
= 7
(b)
Amount that Sarah spent on notebooks
= 7 u
= 7 x 7
= $49
Answer(s): (a) 7; (b) $49