Lynn spent
34 of her money on 12 markers and 8 staplers. The cost of each stapler is 3 times the cost of each marker. She bought some more markers with
12 of her remaining money. How many markers did Lynn buy altogether?
| 12 markers + 8 staplers |
Remaining
amount |
Total
amount |
| 3 p = 36 u |
1 p = 12 u |
4 p |
12
markers |
8
staplers |
More markers |
Left |
|
| |
|
1 |
1 |
|
| 12 u |
24 u |
6 u |
|
|
Cost of 1 marker = 1 u
Cost of 1 stapler = 3 u
Cost of 12 markers = 12 x 1 u = 12 u
Cost of 8 staplers = 8 x 3 u = 24 u
Cost of 12 markers + 8 staplers
= 12 u + 24 u
= 36 u
3 p = 36 u
1 p = 36 u ÷ 3 = 12 u
Amount of remaining money that Lynn spent on buying more markers
=
12 x 12 u
= 6 u
Number of markers that Lynn bought with
12 of her remaining money
= 6 u ÷ 1 u
= 6
Total number of markers that Lynn bought
= 12 + 6
= 18
Answer(s): 18
