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Question

Arnav scored 63 marks in English, 57 in Hindi, 82 in Mathematics, 55 in Social Science and x in Science. If the average he scored is 60, find the average of best of four scores.

A
64.25
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B
64.50
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C
62.25
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D
64.25
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Solution

The correct option is A 64.25
We know that,
Average
=Sum of marks scored in all five subjects5

Now,
60=63+57+82+55+x5
257+x=300
x=43
So, marks scored in Science is 43.

Marks scored in five subjects are 63, 57, 82, 55, 43
Best of four marks are 63, 57, 82, 55

Hence, the average of the best four scores is
=63+57+82+554
=64.25

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