Question

find single equivalent discount of 20% , 12% and 4%​

Answer 1

Answer:

$100 - 100 \times \frac{20}{100} = 80 \\ 80 - 80 \times \frac{12}{100} = 80 - 9.6 = 70.4 \\ 70.4 - 70.4 \times \frac{4}{100} = 70.4 - 2.816 = 67.584 \\ so \: overall \: discount = 100 - 67.584 = 32.416\%$

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