PSLEXavier bought one computer for $280 after a discount of 30%.
- What was the price of the computer before discount?
- He paid $117 for a stereo system. The total discount for the computer and stereo system was $198. What was the percentage discount given for the stereo system?
(a)
Price of the computer after the discount in percentage
= 100% - 30%
= 70%
70% of the price of the computer = 280
1% of the price of the computer = 280 ÷ 70 = 4
100% of the price of the computer = 100 x 4 = 400
Price of the computer before the discount = $400
(b)
Discount of the computer
= 400 - 280
= $120
Discount of the stereo system
= 198 - 120
= $78
Original price of the stereo system
= 117 + 78
= $195
Percentage discount of the stereo system
=
78195 x 100%
= 40%
Answer(s): (a) $400; (b) 40%