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Aptitude Preparation

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Test 33 of 39

Chain Rule

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Videos on Chain Rule

Problems on Chain rule – Part 1

Problems on Chain rule – Part 2

  • 1) Direct Proportion: Any two quantities are said to be directly proportional if on the increase of one quantity, the other quantity increases and vice-versa.
  • Example: Cost is directly proportional to the number of objects cast ∝ Number of objects increases (↑) Cost (↑)
  • Example: Work done is directly proportional to the number of working work done ∝ Number of working men Number of men increase (↑) Work done (↑)
  •  Indirect Proportion: Any two quantities are said to be indirectly proportional, if on the increase of one quantity, the other quantity decreases and vice-versa.
  • Example: If the speed of the car is increased, then the time required to cover the distance decreases. Speed of car (↑) Time required decreases (↓)
  • Example: Time is taken to finish work increases if the number of men decreases. Time (↑) Number of men (↓)