Question

The average score of 30 boys in a group test is recorded as 35. However, it was later discovered that two scores of 30 were mistakenly recorded as 40, and one score of 29 was incorrectly noted as 21. What is the correct average score of the group?

A 38.7
B 34.6
C 39.3
D 40.2
Practice Next

Hey! Ask a query