18 children had an average score of 30 in a test. However, when calculating the average, instead of 43, a score of 34 was taken for one child. What will be the corrected average score?
A30.5
B31
C31.5
D32
Answer:
A. 30.5
Read Explanation:
Difference in marks = 9 marks
If the average for one child increases by 0.5 marks, it will result in a total of 9 marks.
Adding this to the original average will yield the new average score.
30 + 0.05 = 30.5