18. What variation is the situation in number 20? A. Direct B. Combined
C. Inverse D. Joint
19. What is y in number 22 when x=4?
A. 1260 B. 63 C. 315/4
D. 46/7
20. If 36 men can do piece of work in 25 days,in how many days will 15 men do it?
A. 50 B. 56 C. 60 D. 77
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C. Inverse D. Joint
19. What is y in number 22 when x=4?
A. 1260 B. 63 C. 315/4
D. 46/7
20. If 36 men can do piece of work in 25 days,in how many days will 15 men do it?
A. 50 B. 56 C. 60 D. 77
__________________________
Nonsense-Report
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