Esther owns a restaurant that sells lunch for $19. The food cost of sales used in producing each set lunch is $5. Additional variable costs are $7 per lunch. What is the contribution margin expressed in dollars and percent for selling 155 lunches? Question 10 options: $7 and 31.4% $905 and 31.4% The answer is not listed $93.5 and 31.4% $1085 and 36.8%