(80/100)*n=24.80
0.8*n=24.80
n=24.80/0.8
n=31
Original prices was £31.00
The original price of the item, after applying a 20% discount that resulted in a sale price of £24.80, was £31.00. This is calculated by understanding that the sale price represents 80% of the original price. By dividing the sale price by 0.8, we find the original price.
;
[tex]5 \div 0.5 \\ = 5 \div \frac{5}{10} \\ \\ = 5 \times \frac{10}{5} \\ \\ = \frac{50}{5} = 10[/tex]