Question

Find the single discount equivalent to a series discount of 30 %, 20 % and 10 %.

Answer 1

Answer:

Let  Market Prize =  100 Rs

Apply 30% discount on it we get

30 /100  × 100

=> 100-30 = 70

Apply 20%  discount on it we get

20 / 100 × 70

=> 70 - 14 = 56

Applying 10% discount on it we get

10/100× 56

=> 56 - 5.6

So, single discount is 50.4%

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@GauravSaxena01

Answer 2

D1 = 30%
D2 = 20%
D3 = 10%
and a single discount for a series of discounts is
$100 - \frac{(100 - d1)}{100} \times \frac{(100 - d2)}{100} \times \frac{(100 - d3)}{100} \times 100 \\ 100 - \frac{(100 - 30)}{100} \times \frac{(100 - 20)}{100} \times \frac{(100 - 10)}{100} \times 100 \\ 100 - \frac{70}{100} \times \frac{80}{100} \times \frac{90}{100} \times 100 \\ 100 - \frac{7}{10} \times \frac{8}{10} \times \frac{9}{10} \times 100 \\ 100 - \frac{56 \times 9}{100 \times 10} \times 100 \\ 100 - \frac{504}{10} \\ 100 - 50.4 \\ 49.6$
hope it helps u