The advertisement shows the cost of buying markers from a stationery kiosk.
- Julie bought 23 markers. How much did she pay?
- Archie bought 80 markers. How much did he pay?
(a)
Number of sets of 15 markers
= 23 ÷ 15
= 1 r 8
Cost of first 15 markers
= 15 x 4.30
= $64.50
Cost of the next 8 markers
= 8 x 4.10
= $32.80
Amount that Julie paid
= 64.50 + 32.80
= $97.30
(b)
Number of markers that was not part of the first 15 markers
= 80 - 15
= 65
Cost of first 15 markers = $64.50
Cost of the next 65 markers
= 65 x 4.10
= $266.50
Total cost of 80 markers before an additional discount of 8% is applied
= 64.50 + 266.50
= $331
Amount that Archie paid in percent after an additional discount of 8% is applied
= 100% - 8%
= 92%
100% of the total cost of 80 markers = 331
1% of the total cost of 80 markers = 331 ÷ 100 = 3.31
92% of the total cost of 80 markers = 92 x 3.31 = 304.52
Amount that Archie paid = $304.52
Answer(s): (a) $97.30; (b) $304.52