Warren and Perry went to buy laptops at a sale. The usual price of 1 laptop was $1500 each.
SALEBuy 1 laptop at 10% discount
Buy 2 or more laptops at 15% discount each
- Warren bought 1 laptop. How much did he pay?
- What is the maximum number of laptops Perry can buy if he has $4000?
(a)
Discounted price of 1 laptop in percent if only 1 was bought
= 100% - 10%
= 90%
100% of 1 laptop = 1500
1% of 1 laptop = 1500 ÷ 100 = 15
90% of 1 laptop = 90 x 15 = 1350
Amount that Warren paid for 1 laptop = $1350
(b)
Discounted price of 1 laptop in percent if more than 1 was bought
= 100% - 15%
= 85%
85% of 1 laptop = 85 x 15 = 1275
Amount that Perry paid for 1 laptop = $1275
Maximum number of laptops that Perry can buy if he has $4000
= 4000 ÷ 1275
= 3 r 175
Answer(s): (a) $1350; (b) 3