Prob 3. The following cost structure is given for the production and serving of a set dinner menu: Raw ingredients $5 Direct labour $2 Other Direct materials $3 Daily Fixed overheads $1,200 Pre-determined Selling price for the dinner is $18 Required: A Calculate the number of this set dinner that must be sold to break even? B Determine the number of dinners that must be sold to earn a daily income of $800.