Problema Solution
In seven years, Huang will be two times as old as he was last year. How old is he now?
Answer provided by our tutors
let
x = Huang's present age
in 7 years, Huang will be 2 times as old as he was last year:
x + 7 = 2(x - 1)
by solving we find:
x = 9 years
click here to see the step by step solution of the equation:
Huang is 9 years old now.