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If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?