Production Question

The question is asking for how many units line A produced in 2006

from stmt1:

A + B = 100,000

Since there is no relation between the variables A and B, we cannot solve for A, insufficient

from stmt2:

1.05A + 1.1B = 107,500

Again, no relation between variables A and B, so we cannot solve for A, insufficient

Looking at both statements together:

We have two equations relating A and B. Looking at both equations you can already see that the two equations are different and can be used to solve for variable A. Both statement together are sufficient to solve the problem, answer is C.

If you want to find the actual numerical answer (even though unnecessary)

I would multiply stmt 1 by 1.1, so:

1.1A + 1.1B = 110,000

Take this statement and subtract stmt 2:

1.1A + 1.1B = 110,000
-1.05A - 1.1B = -107,500

and you get 0.05A = 2,500

Solve for variable A, => A = 50,000