Correct Answer - Option 4 : Rs. 8400
Given:
The price of fridge = The price of TV + Rs. 9000
SP of TV = 70% higher than CP of TV
SP of fridge = 40% of CP of fridge
Sum of the SP of both the items = Rs. 28800
Calculation:
Let the CP of TV and fridge be x and (x + 9000) respectively
SP of fridge = 40% of CP of fridge
⇒ SP of fridge = 0.4(x + 9000)
SP of TV = 70% higher than CP of TV
⇒ SP of TV = CP of TV + 70% of CP
⇒ SP of TV = 1.7x
The sum of the SP = 28800
⇒ 1.7x + 0.4(x + 9000) = 28800
⇒ 2.1x = 28800 – 3600
⇒ 2.1x = 25200
⇒ x = 12000
SP of fridge = 0.4(x + 9000)
⇒ 0.4(12000 + 9000)
⇒ 8400
∴ The selling price of fridge is Rs. 8400.