Multiple choice

The marks of a group of 7 students in a class are 25, 56, 76, 87, 96, 34 and 65. How many students got more marks than the average marks for the group?

  1. 5

  2. 7

  3. 3

  4. 4

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Average = (25+56+76+87+96+34+65) / 7 = 439 / 7 = 62.71. Students with marks > 62.71 are 76, 87, 96, 65. That is 4 students.

AI explanation

Using the average sum formula, the total marks are the sum of the individual marks: 25 + 56 + 76 + 87 + 96 + 34 + 65 = 439. The average marks are 439 / 7 = 62.71. Comparing the marks to the average, the students with 65, 76, 87, and 96 scored higher than the average. Therefore, 4 students got more marks than the average.

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