If 100 men produce 6000 articles in 10 days, it means they produce 600 articles per day (6000 articles / 10 days).
a) For 50 men to produce the same number of articles, it would take them twice as long, so 20 days (10 days * 2).
b) For 150 men, it would take one-third of the time, so approximately 3.33 days (10 days / 3).
