Substitution Method 00:01:53 NCERT Exercise 3.3 Question 1

00:21:33 NCERT Exercise 3.3 Question 2 Solve 2x + 3y = 11 and 2x â€“ 4y = â€“ 24 and hence find the value of â€˜mâ€™ for which y = mx + 3.

00:25:03 NCERT Exercise 3.3 Question 3 part (i) The difference between two numbers is 26 and one number is three times the other. Find them.

00:28:03 NCERT Exercise 3.3 Question 3 part (ii) The larger of two supplementary angles exceeds the smaller by 18 degrees. Find them.

00:31:33 NCERT Exercise 3.3 Question 3 part (iii) The coach of a cricket team buys 7 bats and 6 balls for â‚¹ 3800. Later, she buys 3 bats and 5 balls for â‚¹ 1750. Find the cost of each bat and each ball.

00:37:03 NCERT Exercise 3.3 Question 3 part (iv) The taxi charges in a city consist of a fixed charge together with the charge for the distance covered. For a distance of 10 km, the charge paid is â‚¹105 and for a journey of 15 km, the charge paid is â‚¹155. What are the fixed charges and the charge per km? How much does a person have to pay for travelling a distance of 25 km?

00:42:23 NCERT Exercise 3.3 Question 3 part (v) A fraction becomes 9/11, if 2 is added to both the numerator and the denominator. If, 3 is added to both the numerator and the denominator it becomes 5/6. Find the fraction.

00:48:03 NCERT Exercise 3.3 Question 3 part (vi) Five years hence, the age of Jacob will be three times that of his son. Five years ago, Jacobâ€™s age was seven times that of his son. What are their present ages?