Chain rule...........[competitive. exam prep.... topic 35].

Chain rule is also the one of the important topics asked in many interviews, IBPS, PO, bank exam and in many competitive exams. Candidates should understand the concepts before solving the problems. Chain rule is considered as an important topic in all recruitment exams. Perfect time keeping and practicing the aptitude will lead you to success.

Chain Rule Formula and Terms

  • Direct Proportion:

Two quantities are said to be directly proportional, if on the increase (or decrease) of the one, the other increases (or decreases) to the same extent.
Eg. Cost is directly proportional to the number of articles.
(More Articles, More Cost)

  • Indirect Proportion:

Two quantities are said to be indirectly proportional, if on the increase of the one, the orther decreases to the same extent and vice-versa.
Eg. The time taken by a car is covering a certain distance is inversely proportional to the speed of the car. (More speed, Less is the time taken to cover a distance.)

Note.....In solving problems by chain rule, we compare every item with the term to be found out. Please refer to questions for details.

Chain rule aptitude explanation – examples
The chain rule method rule method is explained with an example which is given below,

Chain rule problem example




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