Question No. 1 A man bought an article for Rs 192 at successive discounts of 20% and %. Find the value of x, if the marked price of the article is Rs. 400
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Explanation:
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Explanation:
successive discount of x% & x% is equivalent to 2x-x^2/100. Percentage of discount.
Here discount% = 259.2/720. • 100 = 36%
We have, 2x-(x^2/100) = 36
200x-x^2 = 3600
X^2–200X+3600= 0
(X-180)(X-20) = 0
X= 180 OR. X= 20
X=180% is rejected discount must be less than 100%
The right solution is X= 20%
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