Average score of a cricketer in 13 matches is 42 runs. if the average score in the first five matches be 54 runs, what is the average score in the last eight matches ?
Average = $$\frac{Total Runs}{Number of Matches}$$
Overall Average runs = 42
Total Matches = 13
Total Runs = 42 x 13 = 546
Now , Average runs in 5 matches = 54
total run in first 5 matches = 54 x 5 = 270
Total Runs in last 8 matches = 546- 270 = 276
Average of last 8 matches = $$\frac{276}{8}$$ = 34.5
hence the answer is option B
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