Question

Q2. 21 years from now, I will be 4 times as old as my present age. My present age is:
Justify your answer.
(a) 6 (b) 7
(c) 8 (d) 9

Answer 1

Answer: Step-by-step explanation:

Consider present age as X  

21 years from now is X+21  

Given,  

X + 21 = 4 X  

4 X - X = 21

3 X = 21  

X = 21/ 3  

= 7

Answer 2

Answer :-

7 is your answer mate

Given :-

• 21 years from now, his age will be 4 times his present age.

Justification :-

It is given that 21 years from now, he will be 4 times as old as his present age

Let the present age be x

Now,

According to the question,

x + 21 = 4x

x - 4x = -21

-3x = -21

x = -21/-3

x = 7

Hence, The present age of the person is 7 $.$

Similar Question :-

4 years from now , I will be 3 times as old as my present age. My present age will be.

Solution :-

Let the present age be x

According to the question,

x + 4 = 3x

x - 3x = -4

-2x = -4

x = -4/-2

x = 2

Hence, The present age of the person is 2 .