Question

(D) 100-
4. A single discount equivalent to a discount series of 10% and 20%​

Answer 1

Step-by-step explanation:

let us take 100

100 after 10% discount is 90

now 20% discount on 90 will be 90 - 90*20/100 = 90 - 18 => 72

therefore a single discount for two successive discounts of 10% and 20% will be

100 - 72 => 28%