Question

16. Eight years from now
John's age will be three
times his present age.
What is John's present
age?
2M​

Answer 1

Present Age = 4 Years

Step-by-step explanation:

Given:

• Eight years from now John's age will be 3 times his present age.

To Find:

• What is John's present age ?

Solution: Let John's present age be x years. Therefore,

[ Eight years from now his age will be ]

• (x + 8) years

A/q

• After 8 year his age will be 3 times his present age.

$\implies{\rm }$ (x + 8) = 3 times x

$\implies{\rm }$ x + 8 = 3x

$\implies{\rm }$ 8 = 3x – x

$\implies{\rm }$ 8 = 2x

$\implies{\rm }$ 8/2 = x

$\implies{\rm }$ 4 = x

Hence, John's present age is 4 years.

[ Verification ]

• After 8 year his age will be 3 times his present age.

Present age + 8 = 3 times present age

4 + 8 = 3 × 4

12 = 12

$\large\bold{\texttt {Verified }}$

Answer 2

Answer:

Let the present age of John be x years.

______________________

☯ $\underline{\boldsymbol{According\: to\:the\: Question\:now :}}$

$:\implies \sf x + 8 = 3x$

$:\implies \sf 8 = 3x - x$

$:\implies \sf 8 = 2x$

$:\implies \sf x = \dfrac{8}{2}$

$:\implies \underline{ \boxed{\sf x = 4 \: years}} \: \: \:\:\: \: \bigg \lgroup \bf John's \: age \bigg \rgroup$

$\therefore\:\underline{\textsf{Present age of John is \textbf{4 years}}}.$