Answer :
You would first find the price of the car at the 30% discount.
30/100 * 18000 = 5400
Then subtract that value from the original price of the car.
18000 - 5400 = 12600.
Hence the price of the card is £12600 after the 30% discount.
To find r%:
9450/12600 x 100 = 75%
To check you answer
75/100 * 12600 = 9450
30/100 * 18000 = 5400
Then subtract that value from the original price of the car.
18000 - 5400 = 12600.
Hence the price of the card is £12600 after the 30% discount.
To find r%:
9450/12600 x 100 = 75%
To check you answer
75/100 * 12600 = 9450