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Question

Which of these are examples of direct proportions:-
(i) Total amount to the number of groceries.
(ii) Time required in completing a work to number of workers doing that work.
(iii) Distance covered to time when speed is constant.


A

(i), (ii)

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B

(i),(ii),(iii)

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C

(i), (iii)

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D

(ii)

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Solution

The correct option is C

(i), (iii)


(i) The amount increases as the number of groceries purchased increases and vice-versa.
(ii) Time required in completing a work is inversely proportional to number of workers doing that work. If workers are more in number then work can be done in less time and vice-versa.
(iii) Distance covered is directly proportional to time when speed is constant and vice-versa.


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