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NCERT Solutions 10th Maths Chapter 3 Pair of Linear Equations in Two Variables Exercise 3.1
If you are interested in reading NCERT Solutions for Chapter 3 Class 10 Pair of Linear Equations in Two Variables then you are at the right frame of mind. You will get all subjects correct and to the point CBSE NCERT Solutions. manabadi.co.in provides these strategies that will aid you a great deal in scoring good marks in the exams.
Exercise 3.1 1. Aftab tells his daughter, "Seven years ago, I was seven times as old as you were then. Also, three years from now, I shall be three times as old as you will be." (Isn't this interesting?) Represent this situation algebraically and graphically. Answer Let present age of Aftab be x And, present age of daughter is represented by y Then Seven years ago, Age of Aftab = x -7 Age of daughter = y-7 According to the question, (x - 7) = 7 (y – 7 ) x – 7 = 7 y – 49 x- 7y = - 49 + 7 x – 7y = - 42 …(i) x = 7y – 42 Putting y = 5, 6 and 7, we get x = 7 × 5 - 42 = 35 - 42 = - 7 x = 7 × 6 - 42 = 42 – 42 = 0 x = 7 × 7 – 42 = 49 – 42 = 7x | -7 | 0 | 7 |
y | 5 | 6 | 7 |
x | 0 | 3 | 6 |
y | -2 | -1 | 0 |
x | 3900 | 1300 | -1300 |
y | -1300 | 0 | 1300 |
x | 80 | 40 | 0 |
y | 0 | 80 | 160 |
x | 0 | 50 | 100 |
y | 150 | 50 | -50 |
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SEND ME ALL BITS FOR CLASS 1 TO 10
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