Jade spent
45 of her money on 12 pencils and 5 staplers. The cost of each stapler is 4 times the cost of each pencil. She bought some more pencils with
34 of her remaining money. How many pencils did Jade buy altogether?
| 12 pencils + 5 staplers |
Remaining
amount |
Total
amount |
| 4 p = 32 u |
1 p = 8 u |
5 p |
12
pencils |
5
staplers |
More pencils |
Left |
|
| |
|
3 |
1 |
|
| 12 u |
20 u |
6 u |
|
|
Cost of 1 pencil = 1 u
Cost of 1 stapler = 4 u
Cost of 12 pencils = 12 x 1 u = 12 u
Cost of 5 staplers = 5 x 4 u = 20 u
Cost of 12 pencils + 5 staplers
= 12 u + 20 u
= 32 u
4 p = 32 u
1 p = 32 u ÷ 4 = 8 u
Amount of remaining money that Jade spent on buying more pencils
=
34 x 8 u
= 6 u
Number of pencils that Jade bought with
34 of her remaining money
= 6 u ÷ 1 u
= 6
Total number of pencils that Jade bought
= 12 + 6
= 18
Answer(s): 18
