# NCERT Solutions for Class 10 Maths Chapter 4 Exercise 4.2

FREE Download NCERT Solutions for Class 10 Maths Chapter 4 Exercise 4.2 Quadratic Equations in English Medium and Hindi Medium PDF for the CBSE Exams 2020 – 2021. NCERT solutions of maths, science, social and Hindi are also given in PDF form. Solutions of other exercises like Exercise 4.1 or Exercise 4.3 or Exercise 4.4 for download or view online all the solutions.

## NCERT Solutions for Class 10 Maths Chapter 4 Exercise 4.2

If you need solutions in Hindi, Click for Hindi Medium solutions of 10 Maths Exercise 4.2   Exercise 4.1

Exercise 4.3

Exercise 4.4

10 Maths Main Page

#### 10 Maths Exercise 4.2 Solutions in Hindi Medium   Exercise 4.1

Exercise 4.3

Exercise 4.4

10 Maths Main Page

To get the solutions in English, Click for English Medium solutions.

##### Important questions based on Class 10 Maths chapter 10 Quadratic Equations for CBSE Exams
1. The difference of two numbers is 5 and the difference of their reciprocals is 1/10. Find the numbers.
2. If the roots of the equation (b – c) x² + (c – a) x + (a – b) = 0 are equal, then prove that 2b = a + c.
3. A two digit number is such that the product of the digit is 35, when 18 is added to the number, the digits inter change their places. Find the number.
4. Three consecutive positive integers are such that the sum of the square of the first and the product of the other two is 46, find the integers.
5. A motor boat whose speed is 9 km/h in still water goes 12 km downstream and comes back in a total time 3 hours. Find the speed of the stream.
6. A train travels 360 km at uniform speed. If the speed had been 5 km/hr more it would have taken 1 hour less for the same journey. Find the speed of the train.
7. The hypotenuse of right angled triangle is 6cm more than twice the shortest side. If the third side is 2 cm less than the hypotenuse, find the sides of the triangle.
8. By a reduction of ₹ 2 per kg in the price of sugar. Anita can purchase 2 kg sugar more for ₹ 224. Find the original price of sugar per kg.
9. ₹ 6500 were divided equally among a certain number of students. Had there been 15 more students, each would have got ₹ 30 less. Find the original number of students.
10. A fast train takes 3 hours less than a slow train in traveling 600 km. If the speed of fast train is 10 km/hr more than the speed of slow train, find the speed of both the trains.