in an examination a student requires 40%of the total marks to pass. if rupa gets 185 marks and fails by 15 marks find the total number

Asked by vimlesh2011 | 4th Dec, 2020, 06:38: PM

Expert Answer:

In the question it is given that Rupa fails by 15 marks. So if we add 15 marks to what she obtained, i.e. 185, she would pass. 
So taking the pass marks as 185 + 15 = 200.
Now the pass % is 40 and let 'x' be the total numbers.
 
40% of x = 200
 
fraction numerator 40 straight x over denominator 100 end fraction space equals space 200
straight x space equals space fraction numerator 200 cross times 100 over denominator 40 end fraction
straight x space equals space 500
 
So, the total marks is 500.

Answered by  | 6th Dec, 2020, 08:07: PM