15. ZZZ Inc. has two divisions. Contribution margins for Divisions A & B were $60,000 and $80,000 respectively. Division A has a contribution margin ratio of 40% while Division B has a contribution margin ratio of 20%.

Total fixed costs were $100,000 of which $20,000 were common fixed costs. The remaining fixed costs were allocated as follows: 40% to Division A and 60% to Division B. What were ZZZ Inc's total sales for the period?

a) 120000

b) 100000

c) 300000

d) 550000