Chain Rule

1. If the cost of x metres of wire is d rupees, then what is the cost of y metres of wire at the same rate?

A. xy / d  

B. xd  

C. yd  

D. yd / x 

 
Correct Answer : D
2. The price of 5.5 dozen pens is 1287. What is the price of 16 such pens?

A. 212  

B. 296  

C. 312  

D. 412 

 
Correct Answer : C
3. The price of 357 mangoes is 1517.25. What will be the approximate price of 49 dozens of such mangoes?

A. 3000  

B. 3500  

C. 4000  

D. 2500 

 
Correct Answer : D
4. If a quarter kg of potato costs 60 paise, how many paise will 200 gm cost?

A. 48 paise  

B. 54 paise  

C. 56 paise  

D. 72 paise 

 
Correct Answer : A
5. 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?

A. 22.8 kg  

B. 25.6 kg  

C. 28 kg  

D. 26.5 kg 

 
Correct Answer : A
6. 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

A. 9 km  

B. 72.5 km  

C. 190.75 km  

D. 885.5 km 

 
Correct Answer : D
7. 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?

A. 178  

B. 195  

C. 204  

D. 488 

 
Correct Answer : B
8. A recipe for stew that feeds 4 people calls for 1.5 teaspoons of salt. If 3 teaspoons = 1 tablespoon, then how many tablespoons of salt will be needed to make enough stew for 18 people?

A. 2.25  

B. 3.25  

C. 4.5  

D. 6 

 
Correct Answer : A
9. A snapshot 1 (7/8)" x 2.5" is to be enlarged so that the longer dimension is 4". What will be the dimension of the shorter side?

A. 2(3/8)"  

B. 2.5"  

C. 3"  

D. 3(3/8)" 

 
Correct Answer : C
10. A canteen requires 651 bananas for a week. Totally, how many bananas will it require for the months of April, May and June?

A. 8463  

B. 8547  

C. 9086  

D. 9284 

 
Correct Answer : A
11. If 4/9 th of a bucket is filled in 1 minute, the rest of it will be filled in

A. 1 min  

B. 9/4 min  

C. 5/4 min  

D. 4/5 min 

 
Correct Answer : C
12. On a certain map of India the actual distance of 1450 km between two cities Delhi and Kolkata is shown as 5 cm. What scale is used to draw the map?

A. 1 : 15 x 10⁶  

B. 1 : 20 x 10⁶  

C. 1 : 25 x 10⁶  

D. 1 : 29 x 10⁶ 

 
Correct Answer : D
13. 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

A. 10 m  

B. 12.5 m  

C. 17.5 m  

D. 21.25 m 

 
Correct Answer : B
14. A TV tower 36 metres high casts a shadow of 24 metres at a particular time of a day. What is the height of a minar with a three metre high flagstaff atop it, if both of these together cast a shadow of 50 metres at the same time of the day?

A. 64 m  

B. 72 m  

C. 75 m  

D. None of these 

 
Correct Answer : B
15. A man completes 5/8 days of a job in 10 days. At this rate, how many more will it take him to finish the job?

A. 5  

B. 6  

C. 7  

D. 7.5 

 
Correct Answer : B
16. 56 men can complete a piece of work in 24 days. In how many days can 42 men complete the same piece of work?

A. 18  

B. 32  

C. 48  

D. 98 

 
Correct Answer : B
17. 30 men can do a piece of work in 16 days. How many men would be required to do the same work in 20 days?

A. 12  

B. 24  

C. 36  

D. 48 

 
Correct Answer : B
18. A group of workers promise to complete a piece of work in 10 days, but five of them do not report for work. If it took the remaining workers 12 days to complete the work, then the number of workers originally hired was

A. 15  

B. 25  

C. 30  

D. 45 

 
Correct Answer : C
19. 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 

 
Correct Answer : B
20. 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 

 
Correct Answer : B
21. The cost of 16 packets of salt, each weighing 900 grams is 28. What will be the cost of 27 packets, if each packet weighs 1 kg?

A. 52.5  

B. 56  

C. 58.5  

D. 64.75 

 
Correct Answer : A
22. 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 

 
Correct Answer : D
23. If 7 maids with 7 mops cleaned 7 floors in 7 hours, how long would it take 3 maids to mop 3 floors with 3 mops?

A. 7/3 hrs  

B. 3 hrs  

C. 49/3 hrs  

D. 7 hrs 

 
Correct Answer : D
24. Four gardeners with four grass mowers mow 400 sq. m of ground in 4 hours. How long would it take for eight gardeners with eight grass mowers to mow 800 sq. m of ground?

A. 4 hrs  

B. 6 hrs  

C. 8 hrs  

D. 12 hrs 

 
Correct Answer : A
25. Runnning at the same constant rate, 6 identical machines can produce a total of 180 bottles per hour. How many bottles could 15 such machines produce in 30 minutes?

A. 225  

B. 250  

C. 300  

D. 350 

 
Correct Answer : A
26. If 6 persons working 8 hours a day earn 8400 per week, then 9 persons working 6 hours a day will earn per week

A. 8400  

B. 9450  

C. 16200  

D. 16800 

 
Correct Answer : B
27. If 5 workers can collect 60 kg wheat in 3 days, how many kilograms of wheat will 8 workers collect in 5 days?

A. 80 kg  

B. 100 kg  

C. 120 kg  

D. 160 kg 

 
Correct Answer : D
28. 50 people consume 350 kg of rice in 30 days. In how many days will 35 people consume 50 kg of rice?

A. 2 days  

B. 3 days  

C. 5 days  

D. 7 days 

 
Correct Answer : E
29. 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. Jan-40  

C. 40  

D. 80 

 
Correct Answer : C
30. Working 8 hours a day, 12 men can do a work in 30 days. Working 4 hours a day, 18 men can do the work in

A. 30 days  

B. 40 days  

C. 45 days  

D. 50 days 

 
Correct Answer : B
31. 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 

 
Correct Answer : D
32. 5 persons can prepare an admission list in 8 days working 7 hours a day. If 2 persons join them so as to complete the work in 4 days, they need to work per day for

A. 8 hrs  

B. 9 hrs  

C. 10 hrs  

D. 12 hrs 

 
Correct Answer : C
33. 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 

 
Correct Answer : D
34. If 8 men can reap 80 hectares in 24 days, then how many hectares can 36 men reap in 30 days?

A. 350  

B. 400  

C. 425  

D. 450 

 
Correct Answer : D
35. A certain number of persons can dig a trench 100 m long, 50 m broad and 10 m deep in 10 days. The same number of persons can dig another trench 20 m broad and 15 m deep in 30 days. The length of the second trench is

A. 400 m  

B. 500 m  

C. 800 m  

D. 900 m 

 
Correct Answer : B
36. If 5 men or 7 women can earn 5250 per day, how much would 7 men and 13 women earn per day?

A. 11600  

B. 11700  

C. 16100  

D. 17100 

 
Correct Answer : D
37. 3 men or 6 women can do a piece of work in 20 days. In how many days will 12 men and 8 women do the same work?

A. 3.5 days  

B. 3.75 days  

C. 4 days  

D. 5 days 

 
Correct Answer : B
38. If 5 men or 9 women can do a piece of work in 19 days, then in how many days will 3 men and 6 women do the same work?

A. 12  

B. 15  

C. 18  

D. 21 

 
Correct Answer : B
39. 49 pumps can empty a reservoir in 6.5 days, working 8 hours a day. If 196 pumps are used for 5 hours each day, then the same work will be completed in

A. 2 days  

B. 2.5 days  

C. 2.6 days  

D. 3 days 

 
Correct Answer : C
40. 30 labourers, working 7 hours a day can finish a piece of work in 18 days. If the labourers work 6 hours a day, then the number of labourers to finish the same piece of work in 30 days, will be:

A. 15  

B. 21  

C. 22  

D. 25 

 
Correct Answer : B
41. 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 a day?

A. 6  

B. 7  

C. 8  

D. 9 

 
Correct Answer : B
42. If 80 lamps can be lighted, 5 hours per day for 10 days for Rs. 21.25, then the number of lamps, which can be lighted 4 hours daily for 30 days, for Rs. 76.50, is

A. 100  

B. 120  

C. 150  

D. 160 

 
Correct Answer : B

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