Question

the sum of farahan and his cousin age is 38. 7 years ago farhan was thrice as old as his cousin.find the present age of farhan​

Answer 1

Step-by-step explanation:

Let x and y be the present age of Farahan and this cousin respectively.

According to the question,

$x + y = 38 \\ x = 38 - y$

And,

$x - 7 = 3(y - 7) \\ 38 - y - 7 = 3 - 21 \\ 31 = - 18 + y \\ 31 + 18 = y \\ y = 49$

Now,

$x = 49 - 38 \\ x = 11$

The present age of Farahan is 11yrs and that of his cousin is 49yrs.