The average weight of 36 students is 50 Kg. It was found later that the figure of 37 Kg was misread as 73 Kg. What is the correct average?

49 Kg

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51 Kg

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50.5 Kg

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49.5 Kg

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None of these

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Solution

The correct option is A 49 Kg
Correct average
$= \frac{50 \times 36 - 73 + 37}{36} = \frac{1764}{36} = 49 K g .$

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The average weight of 36 students is 50 Kg. It was found later that the figure of 37 Kg was misread as 73 Kg. What is the correct average?

The correct option is A 49 KgCorrect average =50×36−73+3736=176436=49 Kg.

The correct option is A 49 Kg
Correct average
$= \frac{50 \times 36 - 73 + 37}{36} = \frac{1764}{36} = 49 K g .$