A+B allternaviely can do a work 7days and B+A alternatively can do a work in 23/2days.then find how many days A AND B will take to complete the work separately?
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Answer:
A = 10 Days
B = 5 Days
Step-by-step explanation:
Correction 23/2 days is 13/2 Days
A+B alternatively can do a work 7days and B+A alternatively can do a work in 13/2days.then find how many days A AND B will take to complete the work separately?
Let say A's 1 day work = A
& B's 1 day work = B
W = Work
A+B alternatively can do a work 7days
=> A work for 4 days & B work for 1 days
4A + 3B = W
B+A alternatively can do a work in 13/2 days = 6.5 days
=> B work for 3.5 days & A work for 3 days
3A + 3.5B = W
=> 4A + 3B = 3A + 3.5B
=> A = 0.5B
4(0.5B) + 3B = W
=> 5B = W
=> B can complete work in 5 Days
5(A/0.5) = W
=> 10A = W
=> A can complete work in 10 days
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