Question
A dealer incurred a loss of 10% when he offered a 20%
discount on the marked price of an article. What percentage discount should he offer on the marked price in order to gain Rs. 2200 on the article, if the marked price is Rs. 36,000?Solution
marked price of the article is Rs. 36,000 Selling price after 20% discount is allowed = 80% of 36,000 = Rs. 28,800 Cost price when there is loss of 10%= 28,800/90 × 100 = Rs. 32,000 Selling price to gain Rs.2200 = Rs. (32,000 + 2200) = Rs. 34,200 
1.3wx = 40 – wy
2. b2 = 2b + p
3. d2 + d = q
Now, observe the given conditions:
One root of equation...
I. 2x² - 15x + 27 = 0
II. 2y² - 13y + 20 = 0
If 3x – 2y = 10 and xy = 11, the value of 27x³ – 8y³ is __________.
I. 27x² + 120x + 77 = 0
II. 56y² + 117y + 36 = 0
If x² + 2x + 9 = (x – 2) (x – 3), then the resultant equation is:
I. 10p² + 21p + 8 = 0
II. 5q² + 19q + 18 = 0
I. 8x² + 2x – 3 = 0
II. 6y² + 11y + 4 = 0
I). p2 + 8p + 15 = 0
II). q2 + 9q + 20 = 0
I. 35x² - 51x + 18 = 0
II. 30y² + 17y – 21 = 0
I. 8y2 - 2y - 21 = 0
II. 2x2 + x - 6 = 0
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