Ahmad and Justin went to buy television sets at a sale. The usual price of 1 television set was $300 each.

SALE
Buy 1 television set at 15% discount
Buy 2 or more television sets at 30% discount each

1. Ahmad bought 1 television set. How much did he pay?
2. What is the maximum number of television sets Justin can buy if he has $7000?

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

100% of 1 television set = 300
1% of 1 television set = 300 ÷ 100 = 3
85% of 1 television set = 85 x 3 = 255 

Amount that Ahmad paid for 1 television set = $255

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

70% of 1 television set = 70 x 3 = 210

Amount that Justin paid for 1 television set = $210

Maximum number of television sets that Justin can buy if he has $7000
= 7000 ÷ 210
= 33 r 70

Answer(s): (a) $255; (b) 33