Natalie spent
34 of her money on 12 markers and 6 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 Natalie buy altogether?
12 markers + 6 staplers |
Remaining amount |
Total amount |
3 p = 30 u |
1 p = 10 u |
4 p |
12 markers |
6 staplers |
More markers |
Left |
|
|
|
1 |
1 |
|
12 u |
18 u |
5 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 6 staplers = 6 x 3 u = 18 u
Cost of 12 markers + 6 staplers
= 12 u + 18 u
= 30 u
3 p = 30 u
1 p = 30 u ÷ 3 = 10 u
Amount of remaining money that Natalie spent on buying more markers
=
12 x 10 u
= 5 u
Number of markers that Natalie bought with
12 of her remaining money
= 5 u ÷ 1 u
= 5
Total number of markers that Natalie bought
= 12 + 5
= 17
Answer(s): 17