Question

Find a discount which is equivalent to two succesive discount of 20 % and 10%.



PLEASE ANSWER STEP BY STEP ​

Answer 1

Answer:

we will first assume any number of which will find the two successive discounts. So, we will assume that number to be 100. Thus, successive discounts i.e. 20% and 10% on 100 is 72. Thus, the answer is 28%.

Use Formula,

Equivalent Discount = (A + B) - (AB/100) where A = First Discount, B =Second Discount.

Equivalent Discount = (20 + 10) - (20*10)/100

Equivalent Discount = 30 - 2 = 28%.

Graphic Change Method

100==20%(disc.)==>80==10%(disc.)==>72

Equivalent discount = 28%.

Answer 2

Answer:

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