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
• B. 64.50
• C. 62.25
• D. 64.25

Answer 1

The correct option is A 64.25

We know that,
Average
$=\frac{Sumofmarksscoredinallfivesubjects}{5}$

Now,
$\Rightarrow 60=\frac{63+57+82+55+x}{5}$
$\Rightarrow 257+x=300$
$\Rightarrow x=43$
So, marks scored in Science is 43.

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

Hence, the average of the best four scores is
$=\frac{63+57+82+55}{4}$
$=64.25$