chaudhary say to mrs pandey,i am thrice as old as you were . when i was as old as you are . if the sum of their present ages is 35 years. find their present age.

An equation is said to be linear equation in two variables if it is written in the form of ax + by + c=0, where a, b & c are real numbers and the coefficients of x and y, i.e a and b respectively, are not equal to zero.

For example, x + 4y = 13 and -21x + 5y = 2 are linear equations in two variables.

Let the present age of Chaudhary is 'X' years and Mrs Pandey is 'Y' years.

So, according to the question:

sum of their present age is 35 years.

X + Y = 35 ----------- ( i )

also, Chaudhary age was thrice when Chaudhary were old as the Mrs Pandey.

Now,

X = 3 ( Y - (X - Y) )

X = 3 ( Y - X + Y )

X = 3 ( 2Y - X )

X = 6Y - 3X

4X = 6Y

2X = 3Y

X = 3Y / 2 ------------- ( ii )

Put value of X from equation ( ii ) in equation ( i ):

3Y/ 2 + Y = 35

5Y = 70

Y = 14 years

Put value of Y in equation ( ii )

X = ( 3 x 14 ) / 2

X = 21 years

Hence, The present age of Chaudhary is 21 years and Mrs Pandey is 14 years.

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chaudhary say to mrs pandey,i am thrice as old as you were . when i was as old as you are . if the sum of their present ages is 35 years. find their present age.​

Answer :

How to write Linear Equation in two variable?

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chaudhary say to mrs pandey,i am thrice as old as you were . when i was as old as you are . if the sum of their present ages is 35 years. find their present age.