Multiple choice

A student got 60% average marks in five compulsory subjects. He got equal marks in each of the two optional subjects and If the marks of these two subjects are added to the marks of the compulsory subjects, the average of marks is reduced by 4%. What percentage of marks did he get in each of the optional subjects ?

  1. 46%

  2. 50%

  3. 52%

  4. 56%

  5. 58%
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let the total percentage from 5 compulsory subjects = 5 × 60 = 300%. Let each optional subject be x%. New average with 7 subjects = 60 - 4 = 56%, so total = 7 × 56 = 392%. Therefore: 300 + 2x = 392, which gives 2x = 92 and x = 46%. The student scored 46% in each optional subject.

Keep practicing — related questions