Mathematical Aptitude - Fractions

11. Find the value of

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12. Ramu finishes 1/3 part of a work in 1 hour. How much part of the work will he finished in 2 1/5 hours?

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13. The ascending arrangements of 2/3, 6/7, 13,21 is :

  • Option : B
  • Explanation : Hint: The question can be solved by taking LCM.
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14. In a class of 40 students, 1/5 of the total number of students like to eat rice only, 2/5 of the total number of students like to eat chapati only, and the remaining students like to eat both. What fraction of the total number of students like to eat both?

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15. Three planets take one revolution around the Sun in 200, 250 and 300 days, respectively in their own orbits. When do they all come relatively to the same position as at a certain point of time in their orbits?

  • Option : B
  • Explanation : Hint: Take LCM of 200, 250 and 300
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