Elyse spent
23 of her money on 10 staplers and 5 markers. The cost of each marker is 4 times the cost of each stapler. She bought some more staplers with
23 of her remaining money. How many staplers did Elyse buy altogether?
| 10 staplers + 5 markers |
Remaining
amount |
Total
amount |
| 2 p = 30 u |
1 p = 15 u |
3 p |
10
staplers |
5
markers |
More staplers |
Left |
|
| |
|
2 |
1 |
|
| 10 u |
20 u |
10 u |
|
|
Cost of 1 stapler = 1 u
Cost of 1 marker = 4 u
Cost of 10 staplers = 10 x 1 u = 10 u
Cost of 5 markers = 5 x 4 u = 20 u
Cost of 10 staplers + 5 markers
= 10 u + 20 u
= 30 u
2 p = 30 u
1 p = 30 u ÷ 2 = 15 u
Amount of remaining money that Elyse spent on buying more staplers
=
23 x 15 u
= 10 u
Number of staplers that Elyse bought with
23 of her remaining money
= 10 u ÷ 1 u
= 10
Total number of staplers that Elyse bought
= 10 + 10
= 20
Answer(s): 20
