Answer :
He's 9 years old. :-)
In seven years, he'll be 16, and 16 is two times older than 8 - the age he was last year.
Answer:
The present age of Huang now = 9 years
Step-by-step explanation:
Let the present age of Huang be x years
Now, after 7 years, Age of Huang will be : x + 7 years
Also, two times as old as he was last year = 2 × (x - 1)
These both quantities are given to be equal in the problem
So, Equating both these equations :
⇒ x + 7 = 2 × (x - 1)
⇒ x + 7 = 2x - 2
⇒ 2x - x = 7 + 2
⇒ x = 9
Hence, The present age of Huang now = 9 years