Question

number of boys in the class.
7.
After 15 years, Mary's age will be four times of her present age. Find her present age.
1
Ti 11
nonne nnd fifts naise coins. It contains 3 times​

Answer 1

Given

After 15 years, Mary's age will be four times of her present age

To Find

Present age of Mary

Solution

Let the present age of Mary be , " x "

Now , A/c to the condition given ,

⇒ x + 15 = 4(x)

⇒ x + 15 = 4x

⇒ 4x - x = 15

⇒ 3x = 15

⇒ x = 5

So , Present age of Mary = 5 years

Answer 2

Correct Question :-

After 15 years, Mary's age will be four times of her present age. Find her present age.

Solution :-

Let,

Present Age Of Mary = x.

After 15 Years,

Present Age Of Mary = x + 15.

According To Question,

➝ x + 15 = 4x.

➝ 4x - x = 15.

➝ 3x = 15.

➝ x = 15/3.

➝ x = 5.

Hence, Present Age Of Mary = 5 Years.