Yen spent
35 of her money on 2 foolscaps and 7 pencils. The cost of one pencil was four times the cost of one foolscap. She bought some more pencils with
15 of her remaining money. How many pencils did Yen buy altogether?
2 foolscaps and
7 pencils |
Remaining amount |
| 3x5 |
2x5 |
| |
More pencils |
Left |
| |
1x2 |
4x2 |
| 15 p |
2 p |
8 p |
Cost of 1 foolscap = 1 u
Cost of 1 pencil = 4 u
Cost of 2 foolscaps = 2 x 1 u = 2 u
Cost of 7 pencils = 7 x 4 u = 28 u
Total cost of 2 foolscaps and 7 pencils
= 2 u + 28 u
= 30 u
15 p = 30 u
1 p = 30 ÷ 15 = 2 u
Amount that Yen used to buy more pencils
= 2 p
= 2 x 2 u
= 4 u
Number of more pencils that Yen bought
= 4 u ÷ 4 u
= 1
Total number of pencils that Yen bought
= 7 + 1
= 8
Answer(s): 8
