a. The table below shows a shopping bill prepared for Ms. Rowe. The prices of some items are missing. i. Calculate the value of X, the cost of 1kg of sugar ( 1 mark) ii. If the cost of 1kg of rice is $10.00 more than for 1kg of flour. Calculate the value of Y and Z. ( 2 marks) iii. A tax of 16% of total cost price of the three items is added to Ms. Rowe's bill. What is Ms. Rowe's total including tax ( 3 marks) b. Orange juice is sold in cartons of three different sizes. Which size of orange juice is the most cost -effective purchase. Justify your answer. ( 3 marks) c. Paul bought and sold a computer. He wrote his business activity as follows: Cost price of computer - $60,000 Marked price of computer - $100,000 Discount on marked price - 5% (if paid by cash) Calculate i. The selling price (paid by cash) ( 2 marks) ii. The profit or loss as a percentage of the cost price ( 2 marks)