A voucher takes 12% off a bill at a restaurant. After using the voucher, the bill for a meal is £31.68. How much was the bill before using the voucher?

The best way to tackle this sort of worded problem is to create a solvable equation. Lets call the bill before the voucher was used, X. So, the price after the voucher was applied is: = X - 12% of X= X - 0.12XWe've already been told that the price of the meal after the discount is £31.68. Therefore, the equation we need to solve is: X - 0.12X = 31.68. Simplifying, 0.88X = 31.68.Therfore X (the original meal price) = 31.68/0.88 = £36.00