Question

John is 2 times old as George and is also 10 years older than George. How old is John?

• A. 10 years
• B. 12 years
• C. 20 years
• D. 21 years

Answer 1

Answer: (C)

20 years

Let the Johns current age be x and Georges current age be y.
As per the given statement form equations,
$x=2y$ ----- (1)
$x=y+10$ ----- (2)
Substitute the value of x in equation (2),
$2y=y+10$
$2y-y=10$
$y=10$
Now, put the value of y in equation (1)
$x=2\left(10\right)$
$x=20$
Therefore, the current age of John is 20 years.