Question
‘F’ is 66.67% more efficient than ‘G’. ‘G’
worked alone for 10 days, and then ‘F’ completed the rest of the work. If the entire job was finished in 35 days, how long would ‘F’ take to do the work alone?Solution
Let the efficiency of ‘G’ = 3x units/day Efficiency of ‘F’ = 5x units/day Time taken by ‘F’ = 35 – 10 = 25 days Total work = 10 × 3x + 25 × 5x = 30x + 125x = 155x units Required time = 155x / 5x = 31 days
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