A & b complete a job in 10 days A can complete a work in 12 days how much days will b takes
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Step-by-step explanation:
so A and B can complete in 2 days
after 2days A left the work
remaining days are left if A and B work together = 10-2=8
so b completed in 12 days expect of 8 days
he takes more 4 days
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