The advertisement shows the cost of buying pens from a stationery kiosk.
- Victoria bought 29 pens. How much did she pay?
- Asher bought 90 pens. How much did he pay?
(a)
Number of sets of 15 pens
= 29 ÷ 15
= 1 r 14
Cost of first 15 pens
= 15 x 4.90
= $73.50
Cost of the next 14 pens
= 14 x 4.70
= $65.80
Amount that Victoria paid
= 73.50 + 65.80
= $139.30
(b)
Number of pens that was not part of the first 15 pens
= 90 - 15
= 75
Cost of first 15 pens = $73.50
Cost of the next 75 pens
= 75 x 4.70
= $352.50
Total cost of 90 pens before an additional discount of 3% is applied
= 73.50 + 352.50
= $426
Amount that Asher paid in percent after an additional discount of 3% is applied
= 100% - 3%
= 97%
100% of the total cost of 90 pens = 426
1% of the total cost of 90 pens = 426 ÷ 100 = 4.26
97% of the total cost of 90 pens = 97 x 4.26 = 413.22
Amount that Asher paid = $413.22
Answer(s): (a) $139.30; (b) $413.22