Question

. In an examination, 100 marks are distributed among three questions so that they are proportional to 8, 5,7. Find the marks for each question.​

Answer 1

Answer:

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Step-by-step explanation:

Mark of each question is 40, 25 and 35 respectively

Solution:

Given that,

In an examination, 100 marks are distributed among three questions so that they are proportional to 8,5,7

Thus,

Ratio = 8 : 5 : 7

Let the mark of 1st question be 8x

Let the mark of 2nd question be 5x

Let the mark of third question be 7x

Total = 100 marks

Thus, we get,

8x + 5x + 7x = 100

20x = 100

x = 5

Thus,

mark of 1st question = 8x = 8(5) = 40

mark of 2nd question = 5x = 5(5) = 25

mark of third question = 7x = 7(5) = 35

Thus mark of each question is 40, 25 and 35 respectively