Zoe spent
35 of her money on 10 notebooks and 4 foolscaps. The cost of one foolscap was twice the cost of one notebook. She bought some more foolscaps with
16 of her remaining money. How many foolscaps did Zoe buy altogether?
10 notebooks and
4 foolscaps |
Remaining amount |
| 3x3 |
2x3 |
| |
More foolscaps |
Left |
| |
1x1 |
5x1 |
| 9 p |
1 p |
5 p |
Cost of 1 notebook = 1 u
Cost of 1 foolscap = 2 u
Cost of 10 notebooks = 10 x 1 u = 10 u
Cost of 4 foolscaps = 4 x 2 u = 8 u
Total cost of 10 notebooks and 4 foolscaps
= 10 u + 8 u
= 18 u
9 p = 18 u
1 p = 18 ÷ 9 = 2 u
Amount that Zoe used to buy more foolscaps
= 1 p
= 1 x 2 u
= 2 u
Number of more foolscaps that Zoe bought
= 2 u ÷ 2 u
= 1
Total number of foolscaps that Zoe bought
= 4 + 1
= 5
Answer(s): 5
