Questions & Answers: "Variation, Time and Work"

Complete guide to "Variation, Time and Work" for Math students. Below you will find important questions and model answers to help you prepare.

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A work is completed by some workers in a few days. If the number of workers is made 2/3 rd times the original number of workers, then how many times will be the days required to be increased than the original to complete the same work?

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$Option$

❌

$Option$

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$Option$

✅

$Option$

To complete a job, ‘A’ requires 12 days. For the same job, ‘B’ requires 20 days to complete the job. Both of them worked together for 3 days and then A left the job. To complete the remaining job, how many days ‘B’ will require?

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✅

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If m = 30 then n = 5. Write the equation of variation.

$Question Diagram$

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m = 6 n

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mn = 150

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n = 150 m

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mn = 6

If x varies directly with y and the value of x = 35, and y = 14, then find which of the following is the equation of variation?

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2x = 5y

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2y = 5x

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2x + 5y = 0

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2y – 5x = 0