Jean spent
38 of her money on 8 pencils and 10 glues. The cost of one glue was four times the cost of one pencil. She bought some more glues with
14 of her remaining money. How many glues did Jean buy altogether?
8 pencils and
10 glues |
Remaining amount |
| 3x4 |
5x4 |
| |
More glues |
Left |
| |
1x5 |
3x5 |
| 12 p |
5 p |
15 p |
Cost of 1 pencil = 1 u
Cost of 1 glue = 4 u
Cost of 8 pencils = 8 x 1 u = 8 u
Cost of 10 glues = 10 x 4 u = 40 u
Total cost of 8 pencils and 10 glues
= 8 u + 40 u
= 48 u
12 p = 48 u
1 p = 48 ÷ 12 = 4 u
Amount that Jean used to buy more glues
= 5 p
= 5 x 4 u
= 20 u
Number of more glues that Jean bought
= 20 u ÷ 4 u
= 5
Total number of glues that Jean bought
= 10 + 5
= 15
Answer(s): 15
