Question

16. Find a single discount which is equivalent to two successive discounts of 10% and 5 %​

Answer 1

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%.