Working together, printer A and printer B would finish the task in 15 minutes. Printer A alone would finish the task in 45 minutes. How many pages does the task contain if printer B prints 3 pages a minute more than printer A ?
Select:
A) 125	B) 135	C) 145	D) 155	E) 165
15*A + 15*B = x pages   in 15 mins printer A will print = 15/45 * x pages = 1/3*x pages   thus in 15 mins printer printer B will print x - 1/3*x = 2/3*x pages   Also it is given that printer B prints 3 more pages per min that printer A. In 15 mins printer 135 will print 45 more pages than printer A   thus 2/3*x - 1/3*x = 45 =&gt; x = 135 pages   Answer: 135
<result>B</result>
Working together, printer A and printer B would finish the task in 15 minutes. Printer A alone would finish the task in 45 minutes. How many pages does the task contain if printer B prints 3 pages a minute more than printer A ?