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If 18 persons can build a wall 140 m long in 42 days, the number of days that 30 persons will take to complete a similar wall 100 m long, is. [CE I Tax 1993] | |
A. | 18 [Correct Answer] |
B. | 24 [Wrong Answer] |
C. | 21 [Wrong Answer] |
D. | 28 [Wrong Answer] |