Answer : 0.0125
Suppose that g (x) varies inversely with x and g (x)=0.2 when x = 0.1.
If x varies inversely with y then y=k/x
Where k is constant of proportionality
g (x) varies inversely with x , so 
g (x)=0.2 when x = 0.1
Plug in the values and solve for k


Multiply 0.1 on both sides
0.02 = k
so 
Now we need to find g(x) when x= 1.6
Plug in 1.6 for x and find out g(x) in the above equation

g(x)= 0.0125