Question

The average of marks scored by the students of a class is 68. The average of the girls in the class is 80 and that of boys is 60. What is the percentage of boys in the class?

• A. 40 %
• B. 60 %
• C. 65 %
• D. 70 %

Answer 1

Answer:

B. 60 %

Read Explanation:

Let there be x boys and (100-x) girls. Then 60x+80 (100-x)=6800 20x = 1200 X = 60 percentage of boys = 60%

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