Q57 of 106 Page 310

The number of workers and the time to complete a job is a case of direct proportion.

False

The number of workers and the time to complete a job is a case of indirect proportion, e.g. if 160 workers can complete a work in 10 days.


Then, 120 workers can complete the same work in 5 days.


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When two quantities are related in such a manner that if one increases and the other decreases, then they always vary inversely.

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If x varies inversely as y and when x = 6, y = 8, then for x = 8 the value of y is 10.

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For fixed time period and rate of interest, the simple interest is directly proportional to the principal.

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The area of cultivated land and the crop harvested is a case of direct proportion.