Answer:
D
Step-by-step explanation:
When we see these inverse proportion problems, we think of the generic form of : y = k/x, where y varies inversely to x and k is a constant.
In this case, y = a and x = b: a = k/b
Now, since b doubles, we have 2b, so: a = k/2b. Since we are dividing by an extra 2 (there's now a 2 in the denominator), a is actually halved.
Thus, the answer is D.
Hope this helps!
