Sean and Ahmad went to buy laptops at a sale. The usual price of 1 laptop was $1500 each.
SALEBuy 1 laptop at 20% discount
Buy 2 or more laptops at 30% discount each
- Sean bought 1 laptop. How much did he pay?
- What is the maximum number of laptops Ahmad can buy if he has $4000?
(a)
Discounted price of 1 laptop in percent if only 1 was bought
= 100% - 20%
= 80%
100% of 1 laptop = 1500
1% of 1 laptop = 1500 ÷ 100 = 15
80% of 1 laptop = 80 x 15 = 1200
Amount that Sean paid for 1 laptop = $1200
(b)
Discounted price of 1 laptop in percent if more than 1 was bought
= 100% - 30%
= 70%
70% of 1 laptop = 70 x 15 = 1050
Amount that Ahmad paid for 1 laptop = $1050
Maximum number of laptops that Ahmad can buy if he has $4000
= 4000 ÷ 1050
= 3 r 850
Answer(s): (a) $1200; (b) 3