Multiple choice

Passage

Directions: Read the following information carefully and answer the question given below. Average Marks by Students of Different Grades in Different Subjects Grade / Subject English Hindi Geography Maths Physics Grade 1 75 76 58 72 86 Grade 2 65 84 84 74 78 Grade 3 87 48 94 88 82 Grade 4 53 76 89 58 84 Grade 5 49 84 64 59 79 Grade 6 59 74 38 91 47 Grade 7 81 85 69 68 76

What is the ratio of the average marks of Grade 7 students in Geography and Physics to the average marks of Grade 3 students in Maths and English?

  1. 29 : 31

  2. 33 : 31

  3. 35 : 29

  4. 29 : 35

  5. 35 : 37
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D Correct answer
Explanation

Grade 7 (Geo + Phys) = (69 + 76) / 2 = 145 / 2 = 72.5. Grade 3 (Maths + Eng) = (88 + 87) / 2 = 175 / 2 = 87.5. Ratio = 72.5 / 87.5 = 725 / 875 = 29 / 35.

AI explanation

The sum of the average marks for Grade 7 in Geography and Physics is 69 + 76, which equals 145, and dividing by 2 gives their average as 72.5. The sum of the average marks for Grade 3 in Maths and English is 88 + 87, which equals 175, and dividing by 2 gives their average as 87.5. The ratio of these two averages is 72.5 to 87.5, which simplifies by dividing both sides by 2.5 to become 29 to 35.

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