Billy and Simon went to buy hard drives at a sale. The usual price of 1 hard drive was $1100 each.
SALEBuy 1 hard drive at 15% discount
Buy 2 or more hard drives at 25% discount each
- Billy bought 1 hard drive. How much did he pay?
- What is the maximum number of hard drives Simon can buy if he has $8000?
(a)
Discounted price of 1 hard drive in percent if only 1 was bought
= 100% - 15%
= 85%
100% of 1 hard drive = 1100
1% of 1 hard drive = 1100 ÷ 100 = 11
85% of 1 hard drive = 85 x 11 = 935
Amount that Billy paid for 1 hard drive = $935
(b)
Discounted price of 1 hard drive in percent if more than 1 was bought
= 100% - 25%
= 75%
75% of 1 hard drive = 75 x 11 = 825
Amount that Simon paid for 1 hard drive = $825
Maximum number of hard drives that Simon can buy if he has $8000
= 8000 ÷ 825
= 9 r 575
Answer(s): (a) $935; (b) 9