The advertisement shows the cost of buying markers from a store.
- Fanny bought 17 markers. How much did she pay?
- Vaidev bought 60 markers. How much did he pay?
(a)
Number of sets of 15 markers
= 17 ÷ 15
= 1 r 2
Cost of first 15 markers
= 15 x 4.70
= $70.50
Cost of the next 2 markers
= 2 x 4.30
= $8.60
Amount that Fanny paid
= 70.50 + 8.60
= $79.10
(b)
Number of markers that was not part of the first 15 markers
= 60 - 15
= 45
Cost of first 15 markers = $70.50
Cost of the next 45 markers
= 45 x 4.30
= $193.50
Total cost of 60 markers before an additional discount of 5% is applied
= 70.50 + 193.50
= $264
Amount that Vaidev paid in percent after an additional discount of 5% is applied
= 100% - 5%
= 95%
100% of the total cost of 60 markers = 264
1% of the total cost of 60 markers = 264 ÷ 100 = 2.64
95% of the total cost of 60 markers = 95 x 2.64 = 250.80
Amount that Vaidev paid = $250.80
Answer(s): (a) $79.10; (b) $250.80