The average of 45 numbers is 150. Later it is found that a number 46 is wrongly written as 91, then find the correct average.

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Question:

The average of 45 numbers is 150. Later it is found that a number 46 is wrongly written as 91, then find the correct average.

A151

B147

C149

D153

Answer:

C. 149

Explanation:

The total sum = 150 × 45 = 6750 46 is wrongly written as 91 correct sum= 6750 – (91 – 46) = 6705 Correct average of the data = 6705/45 = 149

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