Question

After 18 years, Rihan will be 4 times
as old as he is now. His present age is​

Answer 1

Answer:

Rihans current age = 6

Step-by-step explanation:

Let Rihans current age be x

x + 18 = 4x

18 = 4x-x

18 = 3x

x = 18/3

x = 6

.: Rihans current age = 6

Hope it helps :)

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Answer 2

Answer:

Let Rihan's present age be $x$

After 18 years Rihan's age will be $x+18$ years

According to the question,

$x +18=4x\\=> x-4x=-18\\=> -3x=-18\\=> \frac{-3x}{-3} = \frac{-18}{3} \\=> x=6$

Hence, Rihan's present age is 6 years .