Question

0. Sudhir purchased a chair with three consecutive discounts of 20%, 12.5% and 5% The actual deduction will be ?
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Answer 1

The successive discount are 20%, 12.5% and 5%.

Formula:

Successive discount = X + Y - (XY)/100

Where,

X = First discount

Y = Second discount

Calculation:

Successive discount = X + Y - (XY)/100

⇒ 20 + 12.5 - 20 × 12.5/100

⇒ 32.5 - 2.5 = 30

Now, again

Successive discount = X + Y - (XY)/100

X = 30%, Y = 5%

⇒ 30 + 5 - (30 × 5)/100

⇒ 35 - 150/100

⇒ 35 - 1.5 = 33.5%

∴ The single equivalent discount is 33.5%.

Step-by-step explanation:

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