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Two-man can complete a work in 12 days. If they work alternatively and A start work. Find how many days they take to complete the work. If A takes 18 days to finish work?
20 days
22 days
24 days
26 days
A takes 18 days to finish work
Let B take x days
1/x +1/18 =1/12
1/x =1/12 -1/18
=1/36
X=36 days
A start first
One day work 1/18
B second term work 1/36
Two days work together =1/18 +1/36
=(2+1) /36
=1/12
At 12th term they finish work
12×2 =24 days
By: bhavesh kumar singh ProfileResourcesReport error
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