Question
25 laborers working 7 hours daily can finish a road in
16 days. If 35 laborers work 8 hours each day, how many days are needed?Solution
ATQ,
Let the efficiency of a laborer = 'x' units/hour
Total work = 25 × x × 7 × 16 = 2800x units
Number of days = 2800x ÷ (35 × x × 8)= 2800x ÷ 280x = 10 days
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