Question

Sum of the age of Magesh and
his mother 20 years Seven year ago
mer mother's age was three times the
age
of Magesh of that time. Find their present
ages.
(And no useless answer,if you know only then help)​

Answer 1

Step-by-step explanation:

let age of Magesh is x and that of his mother is y

Now x + y =20                        (Given)

⇒x = 20 - y

and Seven years ago ages were x-7 and y-7

Now 3(x-7) = y-7                     (Given)

3(20-y-7) = y-7

13*3 - 3y = y-7

39+7=3y+y

or4y=46

y = 23/2

  = 11.5

x = 20-11.5

  = 9.5