Correct option is A
Given:
X can complete the work in 8 days.
Y can complete the work in 12 days.
They work on alternate days, with X starting on the first day.
Formula Used:
Total work = Efficiency Time
Solution:
Total work = LCM of 8, 12 = 24 unit
Efficiency of X = = 3 days
Efficiency of Y = = 2 days
As they work alternate starting with X
So, in two days X and Y work = 3 + 2 = 5
In 8 days , total work completed = 5 4 = 20 unit
Now, X work for 9th day ,
total work done = 23 unit
Y complete the remaining work =
Total time =
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