Question

A grandfather is $10$ times older than his granddaughter. He is also $54$ years older than her. Find their present ages

Answer 1

Let grand daughter's age: $x$
$\therefore$ Grandfather's age: $10x$
As per the questions
Grandfather's age $=$ Grand daughter's age $+54$
$10x=x+54$
$9x=54$
$x=6$
Grand daughter's age $=6$ years