Question
A shopkeeper marked an article 65% above its cost price
and made a profit of Rs. 644 when he sold the article after giving a discount of 15%. Find the profit percent earned by the shopkeeper if he had sold the article for Rs. 2000.Solution
Let cost price of the article is Rs. ‘x’ So, Selling price of the article = 0.85 × 1.65 × x = Rs. 1.4025x According to question; ⇒ 1.4025x – x = 644 ⇒ 0.4025x = 644 ⇒ x = 1600 Desired Percentage = [(2000 – 1600)/1600] × 100 = 25%
If x  = 107, then find the value of x(x2 - 12x + 48) ?
If a + (1/a) = 2, then find the value of (a5 + a3 + 6)/(7a – 5).Â
 + 11, 18, 27, 38, 54, 66
125 sweets were distributed equally among children in such a way that the number of sweets received by each child is 20% of the total number of children...
- If [6a + (1/3a)] = 7, then find the value of [36a² + (1/9a²) - 4]
 `sqrt(sqrt(2+sqrt(2+sqrt(2)) ... prop)`  = ?
If (a2 + 1/a2) = 11, then find the value of (a3 - 1/a3).

If √n + (1/√n) = 6, then find the value of n + (1/n).