Question

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

Answer 1

Step-by-step explanation:

let the marks be 8x,5x,7x

total marks=100

8x +5x+7x=100

20x=100

x=100/20

x=5

marks are

8×5=40

7×5=35

5×5=25

HOPE IT HELPS

Answer 2

Answer:

40,25 and 35

Step-by-step explanation:

let's take the numbers as 8x, 5x and 7x

8x+5x+7x=100

20x=100

x=100/2

x=5

8x= 8*5

    =40

5x=5*5

    =25

7x=7*5

   =35