Question

after 15 years Mary age will be 4 times of her present age find the find her present age​

Answer 1

Let the age of Mary be x years.

After 15 years her age will be x + 15 years.

As per given condition:-

$4 \: (x) = x + 15 \\ \\ 4x = x + 15 \\ \\ 4x - x = 15 \\ \\ 3x = 15 \\ \\ x = \frac{15}{3} \\ \\ x = 5$

The present age of Mary is 5 years.

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Answer 2

Answer:

marij ki is 15 sal bad char guni hogi tab marriage ki present age 5 year old hogi