Question

Which of the following is not a case of direct variation?

(a)Weight and number of the paper sheets.

(b)Distance covered by a car and the petrol required by it when travelled in a constant speed.

(c) Number of students in a class and fees collected from them.

(d) Number of workers and the time taken to complete the same work.​

Answer 1

Answer:

(d) Number of workers and the time taken to complete the same work are inversely proportional.

If we increase the number of workers, the time taken to complete the work will be less.