Question

Section -D (Each
29. A shopkeeper gives the customer to choose either of the two options for discount:
a. 20%, 10% and 20%
b. 45%
which option would you like and why?
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Answer 1

Answer:

Option B

Step-by-step explanation:

Option A = 20%, 10%, 20%

Thus, effective price = 0.8*0.9*0.8

Effective price = 0.576

Thus, effective discount = 42.4%

Option B = 45%

Thus Option B is higher discount

Answer 2

Answer: (b) 45% is preferred.

Concept : Discounts

Given : Options for discount :

            (i) 20%, 10% and 20%

            (ii) 45%

To Find : Which option is preferable

Step-by-step explanation:

Let the Marked Price be Rs. 100

For option (i) 20%, 10% and 20% :

Rs.100 - (20% of 100) = 100 - 20 = Rs. 80

Rs. 80 - (10% of 80) = 80 - 8 = Rs. 72

Rs. 72 - (20% of 72) = 72 - 14.4 = Rs. 57.6

∴ Effective price for option (i) = Rs. 57.6

For option (ii) 45% :

Rs. 100 - (45% of 100) = Rs. 55

∴ Effective price for option (ii) = Rs. 55

∴ Option (ii) is preferred.

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