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51 men can complete a work in 12 days. Four days after they started working 6 more men joined them. How many days will they now take to complete the remaining work?

A$$8\frac{1}{19}$ days$

B$$5\frac{9}{19}$ days$

C$$7\frac{3}{19}$ days$

D$$6\frac{7}{19}$ days$

Answer:

$$7\frac{3}{19}$ days$

Read Explanation:

73197\frac{3}{19} days

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ഒരു ടാങ്കിലേക്ക് 2 പൈപ്പുകൾ തുറന്നു വച്ചിരിക്കുന്നു. 6 മിനുറ്റുകൊണ്ട് ടാങ്ക് നിറയും. ഒന്നാമത്തെ പൈപ്പ് മാത്രം തുറന്നു വച്ചാൽ 10 മിനിറ്റുകൊണ്ട് നിറയും. എങ്കിൽ രണ്ടാമത്തെ ടാപ്പ് മാത്രംതുറന്നു വച്ചാൽ എത്ര മിനുറ്റുകൊണ്ട് നിറയും ?