A marker cost $3.50. A notebook cost $14.50 more than the marker. Irene spent $50 on such markers and notebooks. She bought twice as many markers as notebooks.
- How many notebooks did Irene buy?
- How much money did Irene spend on the markers?
|
Markers |
Notebooks |
Total |
Number |
2 u |
1 u |
|
Value |
3.50 |
18 |
|
Total value |
7 u |
18 u |
50 |
(a)
Cost of a notebook
= 14.50 + 3.50
= $18
Total cost of markers and notebooks
= 7 u + 18 u
= 25 u
25 u = 50
1 u = 50 ÷ 25 = 2
Number of notebooks that Irene bought
= 1 u
= 2
(b)
Amount that Irene spent on markers
= 7 u
= 7 x 2
= $14
Answer(s): (a) 2; (b) $14