Bobby and Eric went to buy television sets at a sale. The usual price of 1 television set was $1500 each.

SALE
Buy 1 television set at 20% discount
Buy 2 or more television sets at 30% discount each

1. Bobby bought 1 television set. How much did he pay?
2. What is the maximum number of television sets Eric can buy if he has $2000?

(a)
Discounted price of 1 television set in percent if only 1 was bought
= 100% - 20%
= 80%

100% of 1 television set = 1500
1% of 1 television set = 1500 ÷ 100 = 15
80% of 1 television set = 80 x 15 = 1200 

Amount that Bobby paid for 1 television set = $1200

(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 15 = 1050

Amount that Eric paid for 1 television set = $1050

Maximum number of television sets that Eric can buy if he has $2000
= 2000 ÷ 1050
= 1 r 950

Answer(s): (a) $1200; (b) 1