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In a class of 50 students there are 22 g...

In a class of 50 students there are 22 girls who scored an average of 35 marks In the test. What is the average marks of the boys if the class average is 42 marks?

A

50

B

52.5

C

47.5

D

55

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CHAMPION PUBLICATION-2017 TIER-II PAPER(7)-EXERCISE
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  10. 40% are the passing marks. A student gets 250 marks yet fails by 38 ma...

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  18. If the amount on a certain principal in 3 years at 12% rate of interes...

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