The advertisement shows the cost of buying staplers from a stationery kiosk.
- Cindy bought 27 staplers. How much did she pay?
- Fabian bought 60 staplers. How much did he pay?
(a)
Number of sets of 15 staplers
= 27 ÷ 15
= 1 r 12
Cost of first 15 staplers
= 15 x 1.50
= $22.50
Cost of the next 12 staplers
= 12 x 1.10
= $13.20
Amount that Cindy paid
= 22.50 + 13.20
= $35.70
(b)
Number of staplers that was not part of the first 15 staplers
= 60 - 15
= 45
Cost of first 15 staplers = $22.50
Cost of the next 45 staplers
= 45 x 1.10
= $49.50
Total cost of 60 staplers before an additional discount of 8% is applied
= 22.50 + 49.50
= $72
Amount that Fabian paid in percent after an additional discount of 8% is applied
= 100% - 8%
= 92%
100% of the total cost of 60 staplers = 72
1% of the total cost of 60 staplers = 72 ÷ 100 = 0.72
92% of the total cost of 60 staplers = 92 x 0.72 = 66.24
Amount that Fabian paid = $66.24
Answer(s): (a) $35.70; (b) $66.24