A student obtain `75%, 80% and 85%` in three subjects if the marks of another subject are added. Then the average cannot be less than

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A student obtain `75%, 80% and 85%` in three subjects if the marks of another subject are added. Then the average cannot be less than
A. 0.6
B. 0.65
C. 0.8
D. 0.9


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Salim Ahmed Kawsar

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Correct Answer - A
Marks obtained from three subjects out of 300 is
75+80+85=240
If the marks of another subject is added, then the marks will be `ge 240` out of 400.
`therefore` Minimum average marks `=(240)/(4)=60%`
[When marks in the fourth subject =0]

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