a. Emily works in the canteen and sells on average 16 Banana milkshakes,
13 baked macaronis, 5 Cauliflower Fried Rices, 25 Blueberry Muffins in one break.
Each break at the cafeteria is 30-min-long.
How long is it likely to take Emily to sell
50 Banana Milk Shakes,
34 Baked Macaronis,
25...