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