3.) A can do a piece of work in 4 days and B can do the same work in 5 days. Find, how
much work can be done by them working together in : (i) one day (ii) 2 days.
What part of work will be left, after they have worked together for 2 days?
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Step-by-step explanation:
A = 4 d
B= 5 d
Let's take work unit = 20 Unit
Means
A do = 5 unit/ day
B do = 4 unit/ day
In one day both do = 9 unit
In Two days both do = 18 unit
Remaining Unit = 2 Unit After 2 days
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