1. The marked price of a radio is Rs. 2055. If it is sold at 3% discount, find the selling price. Solution: Given, MP = Rs. 2055 Discount percentage = 3 \(\ ⇨ \frac{MP-SP}{MP}×100=3 \) \(…
Continue Reading1. A watch was bought for Rs. 250 and sold it for Rs. 260. Find the profit and profit per cent. Solution: Given, CP = Rs. 250 and SP = Rs. 260 We have, Profit = SP-CP = Rs. 260 - Rs. 250 = Rs. 1…
Continue ReadingExercise 2.2|Advanced Mathematics|Class 9 1. Express the following sets both in roster and rule form: a) Set of even prime numbers Ans. A = {2} A = {\(x: x\) is the even prime number} b) Set of odd nu…
Continue ReadingAdvanced Mathematics | Class 10 | Exercise 4.3 Solve the following equations: (1) \(~~ 3x-2y=2 \), \(9x^2+4y^2=2 \) Solution: Let, \(3x-2y=2 ⇒ x = \frac{2+2y}{3} \) ...(1) and \(9x…
Continue ReadingAdvanced Mathematics | Class 10 | Exercise 4.2 1. Which number when added to its square will make 156? Solution: Let the number be \(x\) According to question, \(x+x^2=156\) ⇒ \(x^2+x-156=0\) …
Continue ReadingAdvanced Mathematics | Class 10 | Exercise 4.1 1. Form a quadratic equation using the following roots: (i) \(-5, 7\) Solution: Here, the given roots a…
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