Kathy spent
37 of her money on 5 folders and 2 glues. The cost of one glue was twice the cost of one folder. She bought some more glues with
13 of her remaining money. How many glues did Kathy buy altogether?
5 folders and
2 glues |
Remaining amount |
| 3x3 |
4x3 |
| |
More glues |
Left |
| |
1x4 |
2x4 |
| 9 p |
4 p |
8 p |
Cost of 1 folder = 1 u
Cost of 1 glue = 2 u
Cost of 5 folders = 5 x 1 u = 5 u
Cost of 2 glues = 2 x 2 u = 4 u
Total cost of 5 folders and 2 glues
= 5 u + 4 u
= 9 u
9 p = 9 u
1 p = 9 ÷ 9 = 1 u
Amount that Kathy used to buy more glues
= 4 p
= 4 x 1 u
= 4 u
Number of more glues that Kathy bought
= 4 u ÷ 2 u
= 2
Total number of glues that Kathy bought
= 2 + 2
= 4
Answer(s): 4
