Marion spent
23 of her money on 12 staplers and 5 files. The cost of each file is 4 times the cost of each stapler. She bought some more staplers with
34 of her remaining money. How many staplers did Marion buy altogether?
| 12 staplers + 5 files |
Remaining
amount |
Total
amount |
| 2 p = 32 u |
1 p = 16 u |
3 p |
12
staplers |
5
files |
More staplers |
Left |
|
| |
|
3 |
1 |
|
| 12 u |
20 u |
12 u |
|
|
Cost of 1 stapler = 1 u
Cost of 1 file = 4 u
Cost of 12 staplers = 12 x 1 u = 12 u
Cost of 5 files = 5 x 4 u = 20 u
Cost of 12 staplers + 5 files
= 12 u + 20 u
= 32 u
2 p = 32 u
1 p = 32 u ÷ 2 = 16 u
Amount of remaining money that Marion spent on buying more staplers
=
34 x 16 u
= 12 u
Number of staplers that Marion bought with
34 of her remaining money
= 12 u ÷ 1 u
= 12
Total number of staplers that Marion bought
= 12 + 12
= 24
Answer(s): 24
