A and B can complete a piece of work in 10 days and 12 days, respectively. If they work on alternate days beginning with A, then in how many days will the work be completed?
A
B
C
D
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ഒരു ടാങ്കിൽ വെള്ളം വരുന്ന രണ്ട് പൈപ്പുകൾ ഉണ്ട്. അവയിൽ ഒരു പൈപ്പ് തുറന്നാൽ 5 മണിക്കൂർ കൊണ്ട് ടാങ്ക് നിറയും. മറ്റേതു തുറന്നാൽ 3 മണിക്കൂർ കൊണ്ട് ടാങ്ക് നിറയും. രണ്ടു പൈപ്പുകളും ഒരുമിച്ച് തുറന്നിട്ടാൽ എത്ര മണിക്കൂർകൊണ്ട് ടാങ്ക് നിറയും ?
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