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vova2212 [387]
3 years ago
12

A discount voucher offering 15% off is used to pay a bill.After using the voucher, the bill is reduced to ?36.72.How much was th

e bill before applying the voucher discount?
Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
5 0

Answer:

$43.20

Step-by-step explanation:

To find the original purchase price, write a proportion and solve. A proportion is an equation where two ratios are set equal.

If the discount if 15% then you pay 85%.

\frac{36.72}{y}= \frac{85}{100}

To solve for y, cross multiply the numerator and denominator of each fraction.

36.72(100) = 85y

3672= 85y

43.2 = y

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