Wipro
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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)
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20*80% + 30*70%
-------------------- = 74%
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