A notebook cost $3.50. A pencil cost $13.50 more than the notebook. Lynn spent $217 on such notebooks and pencils. She bought four times as many notebooks as pencils.
- How many pencils did Lynn buy?
- How much money did Lynn spend on the notebooks?
|
Notebooks |
Pencils |
Total |
Number |
4 u |
1 u |
|
Value |
3.50 |
17 |
|
Total value |
14 u |
17 u |
217 |
(a)
Cost of a pencil
= 13.50 + 3.50
= $17
Total cost of notebooks and pencils
= 14 u + 17 u
= 31 u
31 u = 217
1 u = 217 ÷ 31 = 7
Number of pencils that Lynn bought
= 1 u
= 7
(b)
Amount that Lynn spent on notebooks
= 14 u
= 14 x 7
= $98
Answer(s): (a) 7; (b) $98