Yen spent
23 of her money on 14 markers and 5 notebooks. The cost of each notebook is 2 times the cost of each marker. She bought some more markers with
12 of her remaining money. How many markers did Yen buy altogether?
| 14 markers + 5 notebooks |
Remaining
amount |
Total
amount |
| 2 p = 24 u |
1 p = 12 u |
3 p |
14
markers |
5
notebooks |
More markers |
Left |
|
| |
|
1 |
1 |
|
| 14 u |
10 u |
6 u |
|
|
Cost of 1 marker = 1 u
Cost of 1 notebook = 2 u
Cost of 14 markers = 14 x 1 u = 14 u
Cost of 5 notebooks = 5 x 2 u = 10 u
Cost of 14 markers + 5 notebooks
= 14 u + 10 u
= 24 u
2 p = 24 u
1 p = 24 u ÷ 2 = 12 u
Amount of remaining money that Yen spent on buying more markers
=
12 x 12 u
= 6 u
Number of markers that Yen bought with
12 of her remaining money
= 6 u ÷ 1 u
= 6
Total number of markers that Yen bought
= 14 + 6
= 20
Answer(s): 20
