15. 4 mat-weavers can weave 4 mats in 4 days. At the same rate how many mats would be woven by 8 mat-wea
A.4
B.8
C.12
D.16

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16. Running at the same constant rate 6 identical machines can produce a total of 270 bottles per minute
A.648
B.1800
C.200
D.1080

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17. In a dairy farm 40 cows eat 40 bags. of husk in 40 days. In how many days one cow will eat one bag o
A.1
B.Jan-40
C.40
D.80

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18. 12 men working 8 hours per day complete a piece of work in 10 days. To complete the same work in 8 d
A.4
B.5
C.6
D.8

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19. 10 men working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work t
A.6
B.10
C.12
D.15

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20. 39 persons can repair a road in 12 days working 5 hours a day: In how many days will 30 persons work
A.10
B.13
C.14
D.15

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21. 3 pumps working 8 hours a day can empty a tank in 2 days. How many hours a day must 4 pumps work to
A.9
B.10
C.11
D.12

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