Machine X and machine B are each used to manufacture 660 sprockets. It takes machine X 10 hours longer to produce 660 sprockets than machine B. Machine B produces 10 percent more sprockets per hour than machine X. How many sprockets per hour does machine X produces?  Choose the correct choice from the following choices: A) 6 B) 6.6 C) 60 D) 100 E) 110
I think the correct answer is A.   Machine X produces at a speed of X sp/hour and B at a speed of B sp/hour.   so, 660/X=(660/B)+10 and X=1,1 X---&gt;1,1*660=660+11X---&gt;6=6, so answer 6 is correct
<result>A</result>
Machine X and machine B are each used to manufacture 660 sprockets. It takes machine X 10 hours longer to produce 660 sprockets than machine B. Machine B produces 10 percent more sprockets per hour than machine X. How many sprockets per hour does machine X produces?