2018 · Q18
In an examination, 53% students passed in Mathematics, 61% passed in Physics, 60% passed in Chemistry, 24% passed in Mathematics and Physics, 35% in Physics and Chemistry, 27% in Mathematics and Chemistry and 5% in none. The ratio of percentage of passes in Mathematics and Chemistry but not in Physics in relation to the percentage of passes in Physics and Chemistry but not in Mathematics is
general-mental-abilitydata-interpretation
- A7:5
- B5:7
- C4:5
- D5:4
Explanation
Let t be the percentage passing all three subjects. From the totals, 53+61+60 − 24−35−27 + t + 5 = 100, giving t = 7. Those passing Maths and Chemistry but not Physics are 27 − t = 20; those passing Physics and Chemistry but not Maths are 35 − t = 28. The required ratio is 20:28 = 5:7. Hence the answer is 5:7.