Chain Rule Worksheet-2
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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 made by the larger wheel is:
(a) 4 (b) 9 (c) 12 (d) 49
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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 the remaining meal?
(a) 20 (b) 30 (c) 40 (d) 50
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The cost of 16 packets of salt, each weighing 900 grams is Rs. 28. What will be the cost of 27 packets, if each packet weighs 1 kg?
(a) Rs. 52.50 (b) Rs. 56 (c) Rs. 58.50 (d) Rs. 64.75
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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?
(a) 4 (b) 8 (c) 12 (d) 16
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Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?
(a) 648 (b) 1800 (c) 2700 (d) 108.00
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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?
(a) 1 (b) 
(c) 40 (d) 80
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12 men working 8 hours per day complete a piece of work in 10 days. To complete the same work in 8 days, working 15 hours a day, the number of men required, is:
(a) 4 (b) 5 (c) 6 (d) 8
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10 men, working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days?
(a) 6 (b) 10 (c) 12 (d) 15
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39 persons can repair a road in 12 days, working 5 hours a day. In how many days will 30 persons, working 6 hours a day, complete the work?
(a) 10 (b) 13 (c) 14 (d) 15
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3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?
(a) 9 (b) 10 (c) 11 (d) 12
Answer Key:
(1)-b; (2)-b; (3)-a; (4)-d; (5)-b; (6)-c; (7)-d; (8)-a; (9)-b; (10)-d
