Question

Write the types of variations ( Direct or Inverse) for the following pair of quantities.

1 Speed of a moving body and time taken by it for a particular distance.

2 Number of persons performing a particular work and time taken by them.

3 Number of articles and total cost.

4 Distance travelled by a car and quantity of petrol used.

5 Distance travelled by a bike and total time taken​

Answer 1

Step-by-step explanation:

1) Speed is a measure of how quickly an object moves from one place to another. It is equal to the distance traveled divided by the time. ... To find distance, speed is beside time, so distance is speed multiplied by time.

2) inverse proportion

Solution: (i) The number of workers and the time to complete the job is inverse proportion because less workers will take more time to complete work and more workers will take less time to complete the same work.

Answer 2

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1.Direct

2.Inverse

3.Directly

4.Directly

5.Inverse