Wipro Company Numerical Ability Averages

Two classes took the same test. One class of 20 students made an average grade of 80%, the other class of 30 students made an average grade of 70%. The average grade for all students in both classes is:
A. 75%
B. 72%
C. 74%
D. 77%
E. None of these

Read Solution (Total 1)

20*80% + 30*70%
-------------------- = 74%
50
7 years agoHelpfull: Yes(0) No(0)

Wipro Other Question

A man bought 4 books for $50 each, 5 books for $60 each and 6 books for $70 each. The average cost of a book for the man is:
A. $50
B. $61.33
C. $60
D.$36
E. None of these The average of 6 observations is 12. A new seventh observation is included and the new average is decreased by 1. The seventh observation is:
A. 1
B. 3
C. 6
D. 5
E. None of these