Question

Sabnam appeared in six subjects, A, B, C, D, E and F in an examination scoring 65% of the total marks in all subjects. Each subject had equal maximum marks. Her marks in subject C was 20% less than her marks in subject
E. The ratio of the marks scored by her in subjects A and D was 3:4. Her marks in subject E were 25% more than her marks in subject D. She scored 40 marks more in subject F than in subject B and 40 marks more in subject
B than in subject A. The average mark scored by her in the examination per subject was 130.
to the
What was the average percentage of marks secured by Sabnam in
C and E?
O 0.675
0.65
O 0.625
0.635​

Answer 1

Answer:

0.675

Explanation:

in c marks will be 120 and e 150

soo

((120+150)/200+200)=0.675

Answer 2

Given :  Sabnam appeared in six subjects, A, B, C, D, E and F in an examination scoring 65% of the total marks in all subjects.

To Find : What was the average percentage of marks secured by Sabnam in  C and E?

Solution:

scoring 65% of the total marks in all subjects

The average mark scored by her in the examination per subject was 130.

=> (65/100) * Max Marks Per subject = 130

=> Max Marks Per subject   = 200

6 Subjects Hence Total Max marks = 1200

Sabnam got = 780 Marks ( 130 * 6 )

Marks in A = 3A  and Marks in D = 4A

Marks in E = 4A + (25/100)4A = 5A    

Marks in C =5A - (20/100)5A = 4A

40 marks more in subject  B than in subject A

=> B Marks = 3A  + 40

She scored 40 marks more in subject F than in subject B

=> F Marks = 3A + 80

3A + 3A + 40 + 4A + 4A + 5A + 3A + 80  = 780

=> 22A  = 660

=> A = 30

Marks in C = 120

Marks in E = 150

270 out of 400  =   270/400  = 0.675

67.5 %

percentage of marks secured by Sabnam in  C and E  67.5 %

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