Question

A discount voucher offering 15% off is used to pay a bill.

Answer 1

Answer:

£43.20

Step-by-step explanation:

A discount voucher offering 15% off is used to pay a bill.

Let the original bill be x

After using the voucher of 15% off, the bill is reduced to £36.72

100 - 15 = 85

85% of the bill = £36.72

0.85x = £36.72

x = $\frac{36.72}{0.85}$

x = 43.20

The bill was £43.20 before applying the voucher discount.

Answer 2

We can use the is/of=p/100 method for this problem. Since it's 15% off, this would mean that the bill is 85% of what it was initially. Plug the values into the is/of=p/100 formula.

36.72/x = 85/100

Solve  for x.

x=36.72/0.85

x=43.2

So, the bill was $43.20 before applying the voucher discount of 15% off.

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