Gem spent
23 of her money on 12 staplers and 8 markers. The cost of each marker is 3 times the cost of each stapler. She bought some more staplers with
23 of her remaining money. How many staplers did Gem buy altogether?
| 12 staplers + 8 markers |
Remaining
amount |
Total
amount |
| 2 p = 36 u |
1 p = 18 u |
3 p |
12
staplers |
8
markers |
More staplers |
Left |
|
| |
|
2 |
1 |
|
| 12 u |
24 u |
12 u |
|
|
Cost of 1 stapler = 1 u
Cost of 1 marker = 3 u
Cost of 12 staplers = 12 x 1 u = 12 u
Cost of 8 markers = 8 x 3 u = 24 u
Cost of 12 staplers + 8 markers
= 12 u + 24 u
= 36 u
2 p = 36 u
1 p = 36 u ÷ 2 = 18 u
Amount of remaining money that Gem spent on buying more staplers
=
23 x 18 u
= 12 u
Number of staplers that Gem bought with
23 of her remaining money
= 12 u ÷ 1 u
= 12
Total number of staplers that Gem bought
= 12 + 12
= 24
Answer(s): 24
