Jack and John went to buy laptops at a sale. The usual price of 1 laptop was $1900 each.
SALEBuy 1 laptop at 10% discount
Buy 2 or more laptops at 15% discount each
- Jack bought 1 laptop. How much did he pay?
- What is the maximum number of laptops John can buy if he has $3000?
(a)
Discounted price of 1 laptop in percent if only 1 was bought
= 100% - 10%
= 90%
100% of 1 laptop = 1900
1% of 1 laptop = 1900 ÷ 100 = 19
90% of 1 laptop = 90 x 19 = 1710
Amount that Jack paid for 1 laptop = $1710
(b)
Discounted price of 1 laptop in percent if more than 1 was bought
= 100% - 15%
= 85%
85% of 1 laptop = 85 x 19 = 1615
Amount that John paid for 1 laptop = $1615
Maximum number of laptops that John can buy if he has $3000
= 3000 ÷ 1615
= 1 r 1385
Answer(s): (a) $1710; (b) 1