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  1. A dealer marks his goods 20% above their cost prices. Then, he allows such a discount on the marked price so that he makes a profit of 8%. The rate of discount is :
    1. 12%
    2. 10%
    3. 6%
    4. 4%
Correct Option: B

Let the C.P. of article be Rs. 100.
∴  Its marked price = Rs. 120
Let the rate of discount be y%
At 8% profit , S.P. of article = 100 + 8 = Rs. 108
According to the question,
y% of 120 = Marked price - S.P. of article
⇒ y% of 120 = 120 – 108

⇒ 
120 × y
= 12
100

⇒  y =
12 × 100
= 10%
120



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