George and Cody went to buy hard drives at a sale. The usual price of 1 hard drive was $1200 each.

SALE
Buy 1 hard drive at 15% discount
Buy 2 or more hard drives at 30% discount each

1. George bought 1 hard drive. How much did he pay?
2. What is the maximum number of hard drives Cody can buy if he has $5000?

(a)
Discounted price of 1 hard drive in percent if only 1 was bought
= 100% - 15%
= 85%

100% of 1 hard drive = 1200
1% of 1 hard drive = 1200 ÷ 100 = 12
85% of 1 hard drive = 85 x 12 = 1020 

Amount that George paid for 1 hard drive = $1020

(b)
Discounted price of 1 hard drive in percent if more than 1 was bought
= 100% - 30%
= 70%

70% of 1 hard drive = 70 x 12 = 840

Amount that Cody paid for 1 hard drive = $840

Maximum number of hard drives that Cody can buy if he has $5000
= 5000 ÷ 840
= 5 r 800

Answer(s): (a) $1020; (b) 5