Question

Fifteen years from now Ravi's age will be four times his present age. What is his age?

Answer 1

Answer:

Ravi's present age is 5 years

Step-by-step explanation:

We will try to express this question algebraiclly so that it becomes easy to solve

Let ravi's present age be x

∴ x+15 will be 4 times x

⇒4x = x+15

Now the question becomes very easy to solve using basic algebra

Shift the x to LHS

⇒ 4x - x = 15

∴ 3x = 15

Now Transpose 3 to RHS

⇒ x = 15/3 = 5

hope it helps

Answer 2

$\huge{\blue{\fcolorbox{blue}{lime}{\boxed{\orange{\bf{\underbrace{\overbrace{\fcolorbox{blue}{black}{ \underline{ \red{Answer }}}}}}}}}}}$

Let Ravi's present age be x years.

After 15 years, his age will be (x+15) years.

It is given that after 15 years, Ravi's age will be four times his present age.

∴4x=x+15

⇒4x−x=15

⇒3x=15

⇒x= 15/3

=5

Hence, Ravi's present age is 5 years