The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is ?->(Show Answer!)

1. The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is

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By: anil on 05 May 2019 01.48 am

Average marks of 60 students = 65 => Total marks of 60 students = $$60 imes 65=3900$$ Average marks of half students i.e. $$frac{60}{2}=30$$ students = 85 => Total marks of 30 students = $$30 imes 85=2550$$ Total marks of remaining 30 students = $$3900-2550=1350$$ $$ herefore$$ Average marks of remaining 30 students = $$frac{1350}{30}=45$$ => Ans - (B)

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