In nine innings of cricket, the average score of a batsman is 47 runs. How many runs does he need to score in the tenth innings to make his average 51?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 87
The total runs are the average multiplied by the number of innings. The tenth innings must make up the difference between the required total and the present total.
Runs in 9 innings \(=9\times47=423\)
Runs needed in 10 innings for an average of 51 \(=10\times51=510\)
Runs needed in the tenth innings \(=510-423=87\)
He needs to score 87 runs.