Quantitative Aptitude Ques 1622

Question: In a History examination, the average for the entire class was 80 marks. If 10% of the students scored 95 marks and 20% scored 90 marks. What was the average marks of the remaining students of the class? [FCI (Assistant) Grade III 2015]

Options:

A) 65.5

B) 85

C) 75

D) None of these

Show Answer

Answer:

Correct Answer: C

Solution:

  • [c] Let there be 100 students. Then total marks of 10% students $ =10\times 95=950 $ Total marks of 20% students $ =20\times 90=1800 $ Rest marks $ =8000-(950+1800)=5250 $
    $ \therefore $ Average marks $ =\frac{5250}{70}=75 $
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