A pen cost $3.50. A stapler cost $14.50 more than the pen. Gillian spent $384 on such pens and staplers. She bought four times as many pens as staplers.
- How many staplers did Gillian buy?
- How much money did Gillian spend on the pens?
|
Pens |
Staplers |
Total |
Number |
4 u |
1 u |
|
Value |
3.50 |
18 |
|
Total value |
14 u |
18 u |
384 |
(a)
Cost of a stapler
= 14.50 + 3.50
= $18
Total cost of pens and staplers
= 14 u + 18 u
= 32 u
32 u = 384
1 u = 384 ÷ 32 = 12
Number of staplers that Gillian bought
= 1 u
= 12
(b)
Amount that Gillian spent on pens
= 14 u
= 14 x 12
= $168
Answer(s): (a) 12; (b) $168