Problema Solution
In 30 years, William will be 4 times as old as he is right now.
How old is he right now?
Answer provided by our tutors
let 'x' be the age of William now
in 30 years, William will be 4 times as old as he is right now
30 + x = 4x
4x - x = 30
3x = 30
x = 30/3
x = 10
William is 10 years old now.