If E and F together work for 24 days, then they are replaced by A and B respectively, then they can do the remaining work in 20 days. If the efficiency of E and F is 5: 4. If E and F together complete the whole work, then find the difference between the work done by E alone and the total work done by F alone.
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Q1. A can do a task in 18 days, B can do the same task in 24 days and C can destroy the whole work in 36 days. If A & B work for first x days together after that C also joined them, remaining work is completed in
days. Find how many days all three worked together?