SOLUTION: Ed is twice as old as hank . Also , ed is at least 8 years older than hank . What age might hank be ?

The condition gives one equation and one inequality

E = 2H       (1)     and
E - H >= 8   (2)

Substitute (1) into (2), and you will get

2H - H >= 8,

which implies  

H >= 8.


Answer. Hank is at least 8 years old