The average of 60 student’s results is 38. If the average of the first 22 students is 36, and that of the last 32 students is 32, then the average result of the remaining students is:
Answer & explanation
Correct answer: option 2
Sum of marks of 60 students = 60 x 38 = 2280
Sum of marks of first 22 students = 22 x 36 = 792
Sum of marks of last 32 students = 32 x 32 = 1024
Sum of marks of remaining 6 {60 - 22 - 32} students = 2280 - 792 - 1024 = 464
Average of remaining students = \(\frac{464}{6}\) = 77.3 ≅ 77