Class 8 Maths Direct and Inverse Proportions | Introduction |
Introduction:
We see many situations in our daily life where we need to see
variation in one quantity bringing in variation in the other quantity.
Two quantities x and y are said to be in direct proportion if they
increase (decrease) together in such a Proportion is used to show
how quantities and amounts are related to each other. The amount that
quantities change in relation to each other is governed by proportion rules.
Example:
(i) If the number of articles purchased increases, the total cost also increases.
(ii) More the money deposited in a bank, more is the interest earned.
(iii) As the speed of a vehicle increases, the time taken to cover the same
distance decreases.
(iv) For a given job, more the number of workers, less will be the time
taken to complete the work.
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