Question 19 3 Points Which of the following could have caused the variances observed in the solutions to questions 15-18? . A A purchase of inferior materials and a lower grade of labour used B A purchase of inferior materials and a higher grade of labour used purchase of superior materials and a lower grade of labour used D A purchase of superior materials and a higher grade of labour used Question 21 7 Points What is the maximum contribution that Berry Ltd can make given the limited number of labour hours available? Give your answer to the nearest whole pound. Do NOT include a sign in your answer. If entering thousands, do NOT include a comma. Blank 1 Blank 1 Add your answer Question 15 5 Points The following information relates to questions 15 to 19. Roast Ltd manufacture and sell packets of ground coffee. The following information relates to the standard costing information for their best selling blend: Standard usage of material per packet of coffee: 1 kg Standard price of one kg of coffee beans: 2 Labour Hours to produce one packet of coffee: 04 Hours Standard Labour cost 12 per hour. Actual operational results for the month of April are as follows: I Packets planned to be produced: 12,000 Packets actually produced: 11,000 Actual usage of material was 10,800 Kg costing a total of 24,300. Actual Labour hours were 1,000 costing 13,500