Question

Which of the following is not a case of direct variation?
(i) Number of sheets of some kind are incresed when their total weight its increased
(ii) More quentity of petrol is required to travel more distance with a fixed speed
(iii) More fees would be collected if number of students increased in a class
(iv) Time taken will be less if number of workers are increased to complete the same work.​

Answer 1

Answer:

iv. option is not an example of direct variation.

because in direct variation an increase in one quantity results a corresponding increase in the other and vice-versa

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