The advertisement shows the cost of buying staplers from a store.
- Elyse bought 27 staplers. How much did she pay?
- Henry bought 50 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 3.10
= $46.50
Cost of the next 12 staplers
= 12 x 2.70
= $32.40
Amount that Elyse paid
= 46.50 + 32.40
= $78.90
(b)
Number of staplers that was not part of the first 15 staplers
= 50 - 15
= 35
Cost of first 15 staplers = $46.50
Cost of the next 35 staplers
= 35 x 2.70
= $94.50
Total cost of 50 staplers before an additional discount of 5% is applied
= 46.50 + 94.50
= $141
Amount that Henry paid in percent after an additional discount of 5% is applied
= 100% - 5%
= 95%
100% of the total cost of 50 staplers = 141
1% of the total cost of 50 staplers = 141 ÷ 100 = 1.41
95% of the total cost of 50 staplers = 95 x 1.41 = 133.95
Amount that Henry paid = $133.95
Answer(s): (a) $78.90; (b) $133.95