The percent profit when an article is sold for Rs. 78 is twice as when it is sold for Rs. 69. The C.P. of the article is?

Correct Answer: Rs. 60

Explanation:

Let the C.P. be Rs. x
Then 2(69 - x) / 100 = (78 - x) / 100
⇒ 138 - 2x = 78 - x
⇒ x = 60
∴ C.P. = Rs. 60


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