Question

If the successive discounts be 20%, 10% and 5% , then the single equivalent rate of discount is

Answer 1

Answer:

Step-by-step explanation:

after the first discount of 20 % on y we are left with 0.8 y.

after the second discount of 10 % on 0.8 y we are left with 0.9(0.8 y) =

0.72 y.

after the third discount of 5 % on

0.72 y we are left with 0.95(0.72 y) = 0.684 y

Total discount is 1 - 0.684 = 0.316 = 31.6 %.