Question

Fifteen years from now Ravi's age will be 4 times his present age.what is ravi's present age

Answer 1

Answer:

Ravi’s present age will be 5.

Solution:

From the given, Let Ravi’s present age is taken as "a" years.  

After 15 years, his age = (a+15) years.  

By the given, it is identified that the age of Ravi after 15 years is equal to the 4 times of his present age.

Given,  

$\begin{array} { c } { a + 15 = 4 a } \\\\ { 4 a - a = 15 } \\\\ { 3 a = 15 } \\\\ { a = \frac { 15 } { 3 } } \\\\ { a = 5 } \end{array}$

Then, it has been found that the present age of Ravi is 5 when his age after 15 years will be 4 times of his present age.  

Answer 2

Answer:

Present age of Ravi (x) = 5 years

Step-by-step explanation:

At present:

Age of Ravi = x years

After 15 years:

Age of Ravi = (x+15) years

According to the problem given,

"Fifteen years from now Ravi's age will be 4 times his present age."

4x = x + 15

=> 4x-x = 15

=> 3x = 15

Divide each term by 3, we get

=> x = 5

Therefore,

Present age of Ravi (x) = 5 years

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