Multiple choice

The average presence of students of a class in a College on Monday, Tuesday and Wednesday is 16 and on the Wednesday, Thursday, Friday and Saturday is 15. If the average number of students on all the six days is 13 then the number of students who attended the class on Wednesday is?

  1. 30

  2. 28

  3. 38

  4. 40

  5. 20

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The sum of students for Monday-Tuesday-Wednesday is 48, and for Wednesday-Thursday-Friday-Saturday is 60. The total for all six days is 78. Wednesday is counted in both averages, so 48 + 60 - Wednesday = 78, giving Wednesday = 30 students.