Multiple choice

In an exam, the average marks obtained by John in English, Maths, Hindi and Drawing were 50. His average marks in Maths, Science, Social Studies and Craft were 70. If the average marks in all seven subjects is 58, his score in maths was?

  1. 50

  2. 52

  3. 60

  4. 74
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let M be the math score. First group: E + M + H + D = 200. Second group: M + S + SS + C = 280. All seven subjects: E + M + H + D + S + SS + C = 406. Adding the first two equations and subtracting the third gives 2M = 148, so M = 74. Math is common to both groups, counted twice in the sum.

Keep practicing — related questions