The average marks of a class of 35 children is 35. The marks of one of the students, who got 35, was incorrectly entered as 65. What is the correct average of the class ? ?->(Show Answer!)

1. The average marks of a class of 35 children is 35. The marks of one of the students, who got 35, was incorrectly entered as 65. What is the correct average of the class ?

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By: anil on 05 May 2019 02.28 am

Average marks of 35 children = 35 => Sum of marks of 35 children = $$35 imes35=1225$$ After correcting the mistake new sum = $$1225-65+35=1195$$ => Correct average = $$frac{1195}{35}=34.14$$ => Ans - (B)

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