Question

2. Mean temperature of a city in a certain week is 30°C .If the mean temperature of first 3
days of the week is 32°C, what is the mean temperature of last 4 days of the week?

Answer 1

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let the temperature be x

mean = sum of all observation/2

30 = 32 + x / 2

30 X 2 = 32 + x

x = 60 - 32

x = 28

.

Hence the temperature of last 4 days will be 28° celsius