Question

Golda is 4 times old as Grace and is also 30 years older than Grace. How old is Grace?

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

Answer 1

The correct option is A 10 years

Let the Goldas current age be x and Graces current age be y.
As per the given statement form equations,
$x=4y$ ----- (1)
$x=y+30$ ----- (2)
Substitute the value of x in equation (2),
$4y=y+30$
$4yy=30$
$3y=30$
$y=\frac{30}{3}=10$
Therefore, the current age of Grace is 10 years.