From statement 1 we can deduce

400*I + F*2*I=$600,000 ( Where I is number of individuals and F was charge for family membership)

So we have one equation and 2 unknown variable so we can not solve it

From 2 we can have

400*I +F*M =$600000 (Where M is number family membership)

400*I + 1200*I=$600,000(From Statement 2)

So we can find I from above equation but still doesn't help us to find "F" (charge of family membership)

So combining statement 1 & 2 we can find the answer of above question