Question

Average temperature for a week is noted as 32 degree Celsius. But later it was realized that Friday’s temperature reading was taken as 30 degree Celsius instead of 16 degree celcius. What is the correct average temperature for the week?
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Answer 1

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Answer 2

Given:

Average temperature of the week (incorrect) = 32°C

Correct reading of Friday = 16°C

Incorrect reading taken for Friday = 30°

To find:

Correct average temperature for the week.

Solution:

Average temperature = Sum of temperatures of the week/ Number of days in a week

32= Sum of temperature/ 7

Sum of temperature (incorrect) = 32*7 = 224

To find the correct sum of temperature we need to add the correct value of Friday's temperature and remove the incorrect one.

Correct sum of temperature of the week = 224 - 30 + 16 = 210

Correct average temperature = 210/7 = 30°C

Therefore the correct average temperature = 30°C