Question

In 5 subjects, Rakesh scored 62 in maths, 81 in science, 72 in English, 87 in Soc.science. His average marks is 79. What are the marks he scored in the computer?

Answer 1

Answer:

93

Step-by-step explanation:

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add all subject +x/5=79

find x value and you will get answer

Answer 2

Average marks = 79

Total number of subjects = 5

Sum of all observations = Average × No. of observations

Thus

Sum of all observations = 79 × 5 = 395

Now, sum of observations is total marks in all subjects

Given

Marks in Maths. = 62

Marks in English. = 72

Marks in Science. = 81

Marks in SSC. = 87

Marks in computer = ?

Well then to get marks scored in computer

Just subtract the total marks in maths, english, science and SSC from total marks in every subject

Hence total marks in computer are

$395 - 62 - 81 - 72 - 87 \\ = 395 - 302 \\ = 93$

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