Question

The average marks scored by Mahesh in five out of
six subjects in an exam is 60. If Mahesh scored an
average of 75 marks in the six subjects, find his score
in the sixth subject.​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

Given that:

The average marks scored by Mahesh in five out of six subjects in an exam is 60. If Mahesh scored an average of 75 marks in the six subjects.

To find:

Marks of Mahesh in sixth subject

Solution: We know that

Average marks= Sum of marks/Total subject

$60 = \frac{sum \: of \: marks \: of \: five \: subjects}{5} \\ \\ sum \: of \: marks \: of \: five \: subjects = 60 \times 5 \\ \\ sum \: of \: marks \: of \: five \: subjects = 300$

Mahesh scored an average of 75 marks in the six subjects,

$75 = \frac{sum \: of \: marks \: of \: 6 \: subjects}{6} \\ \\ sum \: of \: marks \: of \: 6 \: subjects = 75 \times 6 \\ \\ = 450$

Marks scored in 6th subject= Sum of marks of 6 subjects-Sum of marks of 5 subjects

Marks scored in 6th subject=450-300

Marks scored in 6th subject = 150

Hope it helps you.