Multiple choice

The following table shows the marks (in percentages) obtained by six students in four different subjects in an examination. Maximum marks in each subject are 100. Student SUBJECT SST PHYSICS CHEMISTRY MATHS A 92 90 90 80 B 90 80 85 85 C 80 80 65 70 D 85 80 82 75 E 80 75 75 85 F 90 90 90 85 Answer the following question based on the table: What is the number of students whose overall percentage obtained is 80% and above?

  1. 4

  2. 5

  3. 2

  4. 3
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A Correct answer
Explanation

Calculate the average percentage for each student: A=(92+90+90+80)/4=88, B=(90+80+85+85)/4=85, C=(80+80+65+70)/4=73.75, D=(85+80+82+75)/4=80.5, E=(80+75+75+85)/4=78.75, F=(90+90+90+85)/4=88.75. Students A, B, D, and F have 80% or above.

AI explanation

Calculate the sum of the percentage marks obtained by each student across the four subjects and divide by 4 to find the overall percentage. Students A, B, C, and D have sums of 352, 340, 295, and 322, giving overall percentages of 88 percent, 85 percent, 73.75 percent, and 80.5 percent. Students E and F score 78.75 percent and 88.75 percent overall, so the students with 80 percent or more are A, B, D, and F. This yields a total of 4 students.

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