Nora spent
35 of her money on 10 pens and 5 glues. The cost of one glue was four times the cost of one pen. She bought some more glues with
15 of her remaining money. How many glues did Nora buy altogether?
10 pens and
5 glues |
Remaining amount |
| 3x5 |
2x5 |
| |
More glues |
Left |
| |
1x2 |
4x2 |
| 15 p |
2 p |
8 p |
Cost of 1 pen = 1 u
Cost of 1 glue = 4 u
Cost of 10 pens = 10 x 1 u = 10 u
Cost of 5 glues = 5 x 4 u = 20 u
Total cost of 10 pens and 5 glues
= 10 u + 20 u
= 30 u
15 p = 30 u
1 p = 30 ÷ 15 = 2 u
Amount that Nora used to buy more glues
= 2 p
= 2 x 2 u
= 4 u
Number of more glues that Nora bought
= 4 u ÷ 4 u
= 1
Total number of glues that Nora bought
= 5 + 1
= 6
Answer(s): 6
