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Standard X

Mathematics

Mean

A student obt...

Question

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

60%

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65%

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80%

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90%

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Solution

The correct option is A 60%
Marks obtained from 3 subjected is added, then the marks will be $\geq$ 240 out of 400
$∴$ Minimum average marks $\frac{240}{4} = 60 %,$
[when marks in the fourth subject = 0]

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

The correct option is A 60%Marks obtained from 3 subjected is added, then the marks will be ≥ 240 out of 400 ∴ Minimum average marks 2404=60%, [when marks in the fourth subject = 0]

The correct option is A 60%
Marks obtained from 3 subjected is added, then the marks will be $\geq$ 240 out of 400
$∴$ Minimum average marks $\frac{240}{4} = 60 %,$
[when marks in the fourth subject = 0]