Question

A discount series of 10%, 20% and 40% is equivalent to a single discount of
OPTION1) 50%
2) 30.56%
3) 60%
4) 70.28%
5) 55%
6) 40.8%
7) 65%
8) 56.8%
9) 35.6%
10)None of these

Answer 1

Answer:

Step-by-step explanation:

Let original price = Rs.100

Final price = 90% of (80% of 60% of 100)

= 90/100 * 80/100 * 60/100 * 100 = 43.20

Single discount = (100-43.20)% = 56.8 %

Answer 2

Answer:

Step- value after 10%discount.

=100-10 =90

Step2- value after20% discount

= 90- 90×20/100=72

Step3- value after 40%discount

= 72-72×40/100= 43.20

Therefore equivalent single discount rate

= 100- 43.20= 56.8%

Option (8) 56.8% is correct answer

Step-by-step explanation: