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 ?	Choose one:
A) 1:00 P.M.
B) 2:00 P.M
C) 1:30 P.M.
D) 2:30 P.M.
E) 12:30 P.M.
(P + Q + R)'s 1 hour's work =	(	1	+	1	+	1	)	=	37	.   8	10	12	120   Work done by P, Q and R in 2 hours =	(	37	x 2	)	=	37	.   120	60   Remaining work =	(	1 -	37	)	=	23	.   60	60   (Q + R)'s 1 hour's work =	(	1	+	1	)	=	11	.   10	12	60   Now,	11	work is done by Q and R in 1 hour.   60   So,	23	work will be done by Q and R in	(	60	x	23	)	=	23	hours = 2 hours.   60	11	60	11   So, the work will be finished approximately 2 hours after 11 A.M., i.e., around 1 P.M.   Option 1:00 P.M.
<result>A</result>
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 ?