Question
Workers A and B can finish a task in 30 days when
working together. They worked for 18 days, and then C completed the rest of the task alone in 12 days. How many days will C alone take to finish 75% of the work?Solution
ATQ,
Fraction of work done by A and B = 18 / 30 = 3/5
Fraction of work done by C = 1 - 3/5 = 2/5
So, number of days taken by C alone to complete the entire work = 12 ÷ (2/5) = 30 days
So, time taken by C to complete 75% of the work = 30 × 0.75 = 22.5 days
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