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Affordable fees 1-1 or Group class Flexible Timings Verified Tutors If A completed the work in 4 days and B completed the same work in 5 days. How many days will they take on working together?
Answer: Let total work is (lcm of 4 and 5) = 20
A's work in 1 day = 20/4 = 5
B's work in 1 day = 20/5 = 4
Total work in 1 day if they work together = 4+5 =9 and total work = 20.
Therfore, working together they will complete the work in 20/9 days.
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