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A machine P can paint one lakh books in 8 hours; machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines started operating at 9 A. M. while machine P is stopped at 11 A. M. and the reamaining two machines completed the work. Approximately at what time will the work (to print one lakh books) be finished?

Correct Answer: 1:00 P. M.
P,Q এবং R 1 ঘণ্টায় করে 18 + 110 + 112 অংশ = 15 + 12 + 10120 = 37120 " P,Q এবং R 2 " " 37120×2 = 3760 অংশ অবশিষ্ট থাকে 1 - 3760 = 60 - 3760 = 2360 অংশ (Q + R) একত্রে 1 ঘণ্টায় করে 110 + 112 = 6 + 560 = 1160 অংশ Q এবং R একত্রে 1160 অংশ কাজ করে 1 ঘণ্টায় Q এবং R " 2360 " " " 60×2311×60 = 2311 = 2 ঘণ্টায় সুতরাং কাজটি 11 টার পর প্রায় 2 ঘণ্টা পরে অর্থাৎ 1 টায় শেষ হয়।

A machine P can print out one lakh books in 8 hours. Machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 A.M.While machine P is stopped at 11 A.M. and remaining two machines completed the work. Approximately at what at what time will the work time (to print one lakh books) be finished?

A machine P can print one lakh books in 8 hours, machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 A.M. while machine P is closed at 11 A.M. and the remaining two machines complete work. Approximately at what time will the work (to print one lakh books) be finished ?

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