Question

find the single discount equivalent to two successive discounts of 20% and 10%​

Answer 1

Answer:

Equivalent discount =(A+B)-(AB/100) where

A = First discount B = second discount. Equivalent discount = 30 - 2 = 28%.

Answer 2

Step-by-step explanation:

Given:-

two successive discounts of 20% and 10%

To find:-

find the single discount equivalent to two successive discounts of 20% and 10%

Solution:-

Let the amount of the article be 100

First discount =20%

=>100×20%

=>100×20/100

=>20

Discount=20

Then the price of the article =100-20=80

And second discount=10%

=>Discount=10% of 80

=>D=10×80/100

=>D=8

Cost of the article=80-8=72

Let the total discount is d%

=>Price -Discount

=>100-md/100

=>100-(100×d)100=72

=>100-d=72

=>100-72=d

=>d=28

Answer:-

The single discount=28%