Lee and Carl went to buy television sets at a sale. The usual price of 1 television set was $1700 each.

SALE
Buy 1 television set at 20% discount
Buy 2 or more television sets at 25% discount each

1. Lee bought 1 television set. How much did he pay?
2. What is the maximum number of television sets Carl can buy if he has $6000?

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

100% of 1 television set = 1700
1% of 1 television set = 1700 ÷ 100 = 17
80% of 1 television set = 80 x 17 = 1360 

Amount that Lee paid for 1 television set = $1360

(b)
Discounted price of 1 television set in percent if more than 1 was bought
= 100% - 25%
= 75%

75% of 1 television set = 75 x 17 = 1275

Amount that Carl paid for 1 television set = $1275

Maximum number of television sets that Carl can buy if he has $6000
= 6000 ÷ 1275
= 4 r 900

Answer(s): (a) $1360; (b) 4