Question

If 1 1/2 years is added to 3/7th of thd age of ravi it will be half of his present age .what is his present age?

Answer 1

let the present age of Ravi be x

ATP

⇒3/7 *x +11/2=1/2 *x

⇒6x+77=7x         [LCM =14]

⇒77 =7x-6x

⇒77=x  present age of Ravi ANS

Answer 2

The present age of Ravi is 21.

Step-by-step explanation:

Let the present age of Ravi be 's'.

1 $\frac{1}{2}$ has to be first converted to an improper fraction. It becomes $\frac{3}{2}$

Now, according to the question, if we add$\frac{3}{2}$ to$\frac{3}{7}s$ then it will become half of his present age, s.

So, writing in equation form

$\frac{3}{2} + \frac{3}{7}s = \frac{1}{2}s$

Taking 's' terms together, we obtain,

$\frac{3}{2} = \frac{1}{2}s - \frac{3}{7}s$

Now, taking LCM on the right-hand side

$\frac{3}{2} = \frac{7-6}{14}s$

$\frac{3}{2} = \frac{1}{14}s$

So, s becomes

$s = \frac{14\times3}{2}$

s = 21