Ivan and Sean went to buy computers at a sale. The usual price of 1 computer was $1600 each.
SALEBuy 1 computer at 10% discount
Buy 2 or more computers at 15% discount each
- Ivan bought 1 computer. How much did he pay?
- What is the maximum number of computers Sean can buy if he has $3000?
(a)
Discounted price of 1 computer in percent if only 1 was bought
= 100% - 10%
= 90%
100% of 1 computer = 1600
1% of 1 computer = 1600 ÷ 100 = 16
90% of 1 computer = 90 x 16 = 1440
Amount that Ivan paid for 1 computer = $1440
(b)
Discounted price of 1 computer in percent if more than 1 was bought
= 100% - 15%
= 85%
85% of 1 computer = 85 x 16 = 1360
Amount that Sean paid for 1 computer = $1360
Maximum number of computers that Sean can buy if he has $3000
= 3000 ÷ 1360
= 2 r 280
Answer(s): (a) $1440; (b) 2