Chain Rules mcqs test 01 1. If the price of 6 toys is 264.37 what will be the approximate price of 5 toys? Rs.200 Rs.120 Rs.220 Rs.250 2. 3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 purmps work to empty the tank in one day? 12 10 8 14 3. If 36 men can do a piece of work in 25 hours, in how many hours will 15 men do it? 60 70 40 50 4. 15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take, if 3 Women do as much work as 2 men? 30 20 35 40 5. A flag staff 17.5 m high casts a shadow or length 40.26 m. the height or the building, which casts a shadow Or length 28.75 m under similar condition will be: 14.5 m 12.5 m 10 m 8 m 6. dairy farm, 40 cows eat 40 bags of husk in 40 days. In how many days one cow ill eat one bag of husk? 38 40 35 30 7. 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? 10 16 20 12 8. 20 men complete one-third of a piece of work in 20 days. How many more men should be emplòyed to finish the rest of the work in 25 more days? 20 15 12 18 9. If 11.25 m of a uniform iron rod weighs 42.75 Kg, what will be the weight of 6 m of the same rod? 18.5 Kg 27.5 Kg 25.4 Kg 22.8 Kg 10. An industrial loom weaves 0.128 meters of cloth every second .approximately, how many seconds will it take for the loom to weave 25 meters or cloth? 195 210 225 100 11. 36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work? 17 18 20 24 12. 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 created to with the remaining meal? 25 20 35 30 13. If 3 men or 6 boys can do a piece of work in 10 days, working 7 hours a day; how many days will it take to complete a piece of work twice as large with 6 men and 2 boys working together for 8 hours a day? 7.5 0.5 9.5 9 14. The price of 357 mangoes is Rs.1517.25. What will be the approximate price of 9 dozens of such mangoes? Rs.2500 Rs.3300 Rs.2000 Rs.3000 15. A garrison of 500 men had provisions for 27 days. After 3 days reinforcement of 300 men arrived. For how many more days will the remaining od last now? 12 15 20 10 16. A fort had provision of food for 150 men for 45 days. After 10 days, 25 men left the fort. The number of days for which the remaining food will last, is: 42 35 30 38 17. 49 pumps can empty a reservoir in 6.5 days, working 8 hours a day. If 96 pumps are used for 5 hours each day, then the same work will be completed in: 4 days 2 days 2 3/5 days 3 days 18. men and 7 boys can do a piece of work in 14 days; 3 men and 8 boys can do the same in 11 days. Then 8 men and 6 boys can do three times the amount of this work in: 27 days 24 days 1 8 days 21 days 19. 49 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? 14 13 17 10 20. If 7 spiders make 7 webs in 7 days, then one spider will make one web in how many days? 9 7 10 12 21. If 15 toys cost Rs.234, what do 35 toys cost? Rs.546 Rs.5555 Rs,560 Rs.572 22. A rope makes 70 rounds of the circumference of a cylinder whose radius of the base is 14 cm. How many times can it go round a cylinder with radius 20 cm? 63 49 57 25 23. In a camp, 95 men had provisions for 200 days. After5 days, 30 men left the camp. For how many days wiI the remaining food last now? 270 300 285 290 24. If 18 binders bind 900 books in 10 days, how many binders will be required to bind 660 books in 12 days? 7 9 13 11 25. If a quarter Kg of potato costs 60 paisa, how many paisa will 200 gm cost?: 52 72 56 48 26. If 18 pumps can raise 2170 tonnes of water in 10 days, working 7 hours a day; in how many days will 16 pumps raise 1736 tonnes of water, working 9 hours à day? 11 7 5 3 27. 12 men working 8 hours per day complete a piece of a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days? 5 8 9 10 28. If the wages of 6 men for 15 days be Rs.2100, then find the wages of 9 men for 12 days: Rs.2400 Rs.2600 Rs.2520 Rs.2750 29. Some persons can do a piece of work in 12 days. Two times the number of such persons will do half of that work in? 7 days 5 days 8 days 3 days 30. If 8 men can reap 80 hectares in 24 days, then how many hectares can 36 men reap in 30 days? 300 550 450 350 31. If 20 men can build a wall 56 meters long in 6 days, what length of a similar wall can be built by 35 men in 3 days? 49 55 52 58 32. A man completes 5/8 of a job in 10 days. At this rate, how many more days will it take him to finish the job? 5 3 8 6 33. If 15 men, working 9 hours a day, can reap a field in 16 days, in how many days will 18 men reap the field, working 8 hours a day? 6 8 10 12 34. On a scale of map, 0.6 cm represents 6.6 km. If the distance between the points on the.map is 80.5 cm, the actual distance between these points is: 885.5 Km 1000 Km 775.5 Km 810.5 Km 35. If 5 men or 9 women can do a piece of work in 19 days, then in how many days will 3 men and Bwomen do the same work? 15 17 19 9 Loading …