Exercise 13.3 1. The list price of a refrigerator is Rs.9700. If a value-added tax of 6% is to be charged on it, how much one has to pay to buy the refrigerator? Solution: List price of the refrigerator = Rs. 9700 VAT = 6% So, VAT = 6% of Rs.9700 = (6/100) […]

### Tag: Mathematics Class 8

## RD Sharma Class 8 Math 13th Chapter Profit, Loss, Discount and Value added Tax (VAT) Exercise 13.2 Solution

Exercise 13.2 1. Find the S.P. (i) P = Rs.13000 and Discount = 10% (ii) M.P = Rs.500 and Discount = 15% Solution: (i) p = Rs. 13000 and Discount = 10% We know that S.P = M.P – Discount S.P = Rs (1300-130) = Rs. 1170 (ii) M.P = Rs. 500 and Discount […]

## RD Sharma Class 8 Math 13th Chapter Profit, Loss, Discount and Value Added Tax (VAT) Exercise 13.1 Solution

Exercise 13.1 1. A student buys a pen for Rs 90 and sells it for Rs 100. Find his gain and gain percent. Solution: Cost price of pen = Rs. 90 Selling price of pen = Rs. 100 Hence, 2. Rekha bought a saree for Rs.1240 and sold it for Rs. 1147. Find […]

## RD Sharma Class 8 Math 12th Chapter Percentage Exercise 12.2 Solution

Exercise 12.2 1. Find: (i) 22% of 120 Solution: (ii) 25% of Rs 1000 Solution: (iii) 25% 0f 10 kg Solution: (iv) 16.5% of 5000 metre Solution: (v) 135% of 80 cm Solution: (vi) 2.5% OF 10000 ml Solution: 2. Find the number a, if (i) 8.4% of a is 42 Solution: (ii) […]

## RD Sharma Class 8 Math 12th Chapter Percentage Exercise 12.1 Solution

Exercise 12.1 1. Write each of the following as percent: (i) Solution: = 62.5% (iv) 0.8 = 0.8 (100) = 80% (v) 0.005 = 0.005 (100) = 0.5% (vi) 3:25 (vii) 11:80 = 13.75% (viii) 111:125 (ix) 13:75 (x) 15:16 (xi) 0.18 = 0.18(100) = 18% 2. Convert the following percentages to […]

## RD Sharma Class 8 Math 11th Chapter Time and Work Exercise 11.1 Solution

Exercise 11.1 1. Rakesh can do a piece of work in 20 days. How much work can he do in 4 days? Solution: It is given that:- Rakesh can do a piece of work in 20 days. So, Rakesh’s 1 day’s work = 1: 20 Rakesh’s work for 4 days = 4: 20 […]

## RD Sharma Class 8 Math 10th Chapter Direct and Inverse Variations Exercise 10.2 Solution

Exercise 10.2 1. In which of the following tables x and y vary inversely: (i) X 4 3 12 1 y 6 8 24 24 (ii) X 5 20 10 4 y 20 5 10 25 (iii) X 4 3 6 1 y 9 12 8 36 (iv) X 9 24 15 3 y […]

## RD Sharma Class 8 Math 10th Chapter Direct And Inverse Variations Exercise 10.1 Solution

Exercise 10.1 1. Explain the concept of direct variation. Solution: When two variables are connected to each other in such a way that if we increase the value of one variable, the value of other variable also increases and vice — versa. Similarly, if we decrease the value of one variable, the value […]

## RD Sharma Class 8 Math 9th Chapter Linear Equation in One Variable Exercise 9.4 Solution

EXERCISE 9.4 1. Four-fifth of a number is more than three-fourths of the number by 4. Find the number. Solution: Let the number be x. According to the question, Or x = 80 [After cross Multiplication] Thus, the required number is 80 2. The difference between the squares of two consecutive numbers is 31. […]

## RD Sharma Class 8 Math 9th Chapter Linear Equation in One Variable Exercise 9.3 Solution

Exercise 9.3 Solve the following equations and verify your answer: 24. Find a positive value of x for which the given equation is satisfied