A stapler cost $1.50. A pencil cost $14.50 more than the stapler. Olivia spent $76 on such staplers and pencils. She bought twice as many staplers as pencils.
- How many pencils did Olivia buy?
- How much money did Olivia spend on the staplers?
|
Staplers |
Pencils |
Total |
Number |
2 u |
1 u |
|
Value |
1.50 |
16 |
|
Total value |
3 u |
16 u |
76 |
(a)
Cost of a pencil
= 14.50 + 1.50
= $16
Total cost of staplers and pencils
= 3 u + 16 u
= 19 u
19 u = 76
1 u = 76 ÷ 19 = 4
Number of pencils that Olivia bought
= 1 u
= 4
(b)
Amount that Olivia spent on staplers
= 3 u
= 3 x 4
= $12
Answer(s): (a) 4; (b) $12