A pen cost $1.50. A notebook cost $15.50 more than the pen. Min spent $92 on such pens and notebooks. She bought four times as many pens as notebooks.
- How many notebooks did Min buy?
- How much money did Min spend on the pens?
|
Pens |
Notebooks |
Total |
Number |
4 u |
1 u |
|
Value |
1.50 |
17 |
|
Total value |
6 u |
17 u |
92 |
(a)
Cost of a notebook
= 15.50 + 1.50
= $17
Total cost of pens and notebooks
= 6 u + 17 u
= 23 u
23 u = 92
1 u = 92 ÷ 23 = 4
Number of notebooks that Min bought
= 1 u
= 4
(b)
Amount that Min spent on pens
= 6 u
= 6 x 4
= $24
Answer(s): (a) 4; (b) $24