Calculating Averages Assignment Complete the following assignment. Show all working and round to the nearest tenth where necessary.. 1. Mary received the following grades in mathematics: 60, 100, 70, 0, 50, Oand 80. (a) Calculate Mary's average. (b) Mary submitted her outstanding assignment and the first O was replaced with a 80 and the second 60. Calculate Mary's new average. (c) What is the difference, in averages after both zeroes were replaced? 2. Belmopan gets a lot of rain during the rainy season. The rainfall during a 7- day period 80 mm, 94 mm, 105 mm, 40 mm, 100 mm, 50 mm and 34 mm. What was the average daily rainfall during the period? 3. Peter slept 390 minutes on Monday, 8 hours on Tuesday and 450 minutes on Wednesday. What was the average hours of sleep he got during the 3 days? Belize can get very hot in the summer months. The temperature in Belize during a period of 1 week was 35. C, 36'C, 40'C, 38"C, 42"C, 37'C and 41"C. What was the average daily temperature in Belize during the week