Chain Rule - General Questions (1)
| 1. | 4 mat-weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 8 mat-weavers in 8 days? |
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Answer: Option D Explanation: Let the required number of bottles be x. More weavers, More mats (Direct Proportion) More days, More mats (Direct Proportion)
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4 x 4 x x = 8 x 8 x 4
x =| 2. | 36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work? |
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Answer: Option D Explanation: Let the required number of days be x. Less men, More days (Indirect Proportion)
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27 x x = 36 x 18| 3. | An industrial loom weaves 0.128 metres of cloth every second. Approximately, how many seconds will it take for the loom to weave 25 metres of cloth? |
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Answer: Option B Explanation: Le the required time be x seconds. More metres, More time (Direct Proportion)
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| 4. | In a camp, there is a meal for 120 men or 200 children. If 150 children have taken the meal, how many men will be catered to with remaining meal? |
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Answer: Option B Explanation: There is a meal for 200 children. 150 children have taken the meal. Remaining meal is to be catered to 50 children. Now, 200 children
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120 men.
| 5. | A flagstaff 17.5 m high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be: |
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Answer: Option B Explanation: Let the height of the building x metres. Less lengthy shadow, Less in the height (Direct Proportion)
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| 6. | If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days? |
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Answer: Option C Explanation: Let the required number days be x. Less spiders, More days (Indirect Proportion) Less webs, Less days (Direct Proportion)
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| 7. | A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the smaller wheel has made 21 revolutions, then the number of revolutions mad by the larger wheel is: |
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Answer: Option B Explanation: Let the required number of revolutions made by larger wheel be x. Then, More cogs, Less revolutions (Indirect Proportion)
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| 8. | In a dairy farm, 40 cows eat 40 bags of husk in 40 days. In how many days one cow will eat one bag of husk? |
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Answer: Option C Explanation: Let the required number of days be x. Less cows, More days (Indirect Proportion) Less bags, Less days (Direct Proportion)
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