Kimberly spent
34 of her money on 10 pencils and 8 staplers. The cost of each stapler is 4 times the cost of each pencil. She bought some more pencils with
12 of her remaining money. How many pencils did Kimberly buy altogether?
| 10 pencils + 8 staplers |
Remaining
amount |
Total
amount |
| 3 p = 42 u |
1 p = 14 u |
4 p |
10
pencils |
8
staplers |
More pencils |
Left |
|
| |
|
1 |
1 |
|
| 10 u |
32 u |
7 u |
|
|
Cost of 1 pencil = 1 u
Cost of 1 stapler = 4 u
Cost of 10 pencils = 10 x 1 u = 10 u
Cost of 8 staplers = 8 x 4 u = 32 u
Cost of 10 pencils + 8 staplers
= 10 u + 32 u
= 42 u
3 p = 42 u
1 p = 42 u ÷ 3 = 14 u
Amount of remaining money that Kimberly spent on buying more pencils
=
12 x 14 u
= 7 u
Number of pencils that Kimberly bought with
12 of her remaining money
= 7 u ÷ 1 u
= 7
Total number of pencils that Kimberly bought
= 10 + 7
= 17
Answer(s): 17
