(A) 150
(B) 200
(C) 400
(D) 450
Correct Option is: B
The sum of the marks=6x+5x=11x
But the sum of the marks is given as 275=11x. We get x=25x=25 therefore, John marks is 6x=1506x=150
and Smith marks = 5x=125.
Therefore, the combined average of their marks % = 150+1252=137.5
If the total mark of the exam is 100 then their combined average of their percentage is 68.75
Therefore, if their combined average of their percentage is 137.5 then the total marks would be
137.568.75×100=200