Chain rule questions are mostly related to direct proportions and inderect proportions. For example the amount of work done will be directly proportional to number of persons working. This is an example for direct proportion. Some proportions may be inversely effective. For example time taken to finish 1000km run by a person is inversly proportional to with what speed he or she running. This section covers all the questions and answers on chain rule which is part of arithmetic.
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