David and Zeph went to buy television sets at a sale. The usual price of 1 television set was $1500 each.
SALEBuy 1 television set at 10% discount
Buy 2 or more television sets at 15% discount each
- David bought 1 television set. How much did he pay?
- What is the maximum number of television sets Zeph can buy if he has $5000?
(a)
Discounted price of 1 television set in percent if only 1 was bought
= 100% - 10%
= 90%
100% of 1 television set = 1500
1% of 1 television set = 1500 ÷ 100 = 15
90% of 1 television set = 90 x 15 = 1350
Amount that David paid for 1 television set = $1350
(b)
Discounted price of 1 television set in percent if more than 1 was bought
= 100% - 15%
= 85%
85% of 1 television set = 85 x 15 = 1275
Amount that Zeph paid for 1 television set = $1275
Maximum number of television sets that Zeph can buy if he has $5000
= 5000 ÷ 1275
= 3 r 1175
Answer(s): (a) $1350; (b) 3