According to the question, 14 persons ×18 days = Total work ⇒252= Total work Again, according to the question, 252=14×5+14×1+8×x day [∵14−6 worker =8 workers. ] ⇒252−70−14=8x ⇒168=8x ⇒x=21 ∴ Number of days required to done remaining work is 21 days. Now, total days =21+5+1=27 days.