Runs a flower and custom glass vase shop. the flowers bring in $60,000in sales, and the vases bring in $90,000 in sales. The vase division has $45,000 in variable costs, whereas the flower division...

Runs a flower and custom glass vase shop. the flowers bring in $60,000in sales, and the vases bring in $90,000 in sales. The vase division has $45,000 in variable costs, whereas the flower division only has $24,000. What is the weighted-average contribution margin for Sue's business? A) 50% B) 54% C) 55 D) 40%