A pencil cost $3.50. A notebook cost $15.50 more than the pencil. Zara spent $260 on such pencils and notebooks. She bought twice as many pencils as notebooks.
- How many notebooks did Zara buy?
- How much money did Zara spend on the pencils?
|
Pencils |
Notebooks |
Total |
Number |
2 u |
1 u |
|
Value |
3.50 |
19 |
|
Total value |
7 u |
19 u |
260 |
(a)
Cost of a notebook
= 15.50 + 3.50
= $19
Total cost of pencils and notebooks
= 7 u + 19 u
= 26 u
26 u = 260
1 u = 260 ÷ 26 = 10
Number of notebooks that Zara bought
= 1 u
= 10
(b)
Amount that Zara spent on pencils
= 7 u
= 7 x 10
= $70
Answer(s): (a) 10; (b) $70