Question

1. The list price of a radio is * 160. A man buys it for ® 122.40. He gets two successive discounts
If the one is 10% , find the other one.​

Answer 1

As per given question marked price = 160

After 10% discount, The Selling price

S.P. =100 - 10× 160 = ₹ 144100

Let us assume the other discount = D%

∴ (100 − D)× 144 = ₹ 122.40100

⇒  100 − D =12240144

⇒  100 – D = 85

⇒  D = 100 – 85 = 15%

Alternate method to solve this question :

S.P. = M.P.100 − D1100 − D2100100

⇒  122.40 = 160100 − 10100 − D2100100

12240= 90 ×100 - D2160100

1224000= 100 − D2160 × 90

12240= 100 − D216 × 9

1360= 100 − D216 × 1

⇒  85 = 100 – D2

⇒  D2 = 15%

Step-by-step explanation:

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