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GATE 2020 ME (ME1) – Question 10

General Aptitude · Quantitative Aptitude: Arithmetic and Number Computation · 2 marks · Multiple choice

The bar graph shows students who appeared and passed in an examination for schools P, Q, R and S. Find the average success rate (percentage) of the four schools.

Diagram for GATE 2020 ME (ME1) question 10
  1. 58.5%
  2. 58.8%
  3. 59.0%
  4. 59.3%

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Correct answer: (C) 59.0%

Explanation

The four success rates are 280/500=56%, 330/600=55%, 455/700=65%, and 240/400=60%. Their arithmetic mean is (56+55+65+60)/4=**59.0%, C**. The requested mean of school percentages differs from the aggregate pass percentage.