A and B can do a piece of work in 8 days and A alone can do it in 12 days. In how many days
can B alone do it?
A16
B12
C15
D24
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ഒരു ജോലി മൂന്നുപേർ ചേർന്ന് 12 ദിവസംകൊണ്ട് പൂർത്തിയാക്കും. അത് 9 ദിവസം കൊണ്ട് പൂർത്തിയാക്കാൻ എത്ര പേർ വേണം?
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