Usha spent
37 of her money on 5 files and 2 pencils. The cost of one pencil was twice the cost of one file. She bought some more pencils with
16 of her remaining money. How many pencils did Usha buy altogether?
5 files and
2 pencils |
Remaining amount |
| 3x3 |
4x3 |
| |
More pencils |
Left |
| |
1x2 |
5x2 |
| 9 p |
2 p |
10 p |
Cost of 1 file = 1 u
Cost of 1 pencil = 2 u
Cost of 5 files = 5 x 1 u = 5 u
Cost of 2 pencils = 2 x 2 u = 4 u
Total cost of 5 files and 2 pencils
= 5 u + 4 u
= 9 u
9 p = 9 u
1 p = 9 ÷ 9 = 1 u
Amount that Usha used to buy more pencils
= 2 p
= 2 x 1 u
= 2 u
Number of more pencils that Usha bought
= 2 u ÷ 2 u
= 1
Total number of pencils that Usha bought
= 2 + 1
= 3
Answer(s): 3
