Machine P and Machine Q are each used to manufacture 880 sprockets. It takes Machine P 10 hours longer to produce 880 sprockets than Machine Q. Machine Q produces 10% more sprockets per hour than Machine A. How many sprockets per hour does Machine A produce?	Choose the correct choice
A) 2 B) 4 C) 6 D) 8 E) 10
P makes x sprockets per hour.   Then Q makes 1.1x sprockets per hour.   880/x = 880/1.1x + 10   1.1(880) = 880 + 11x   11x = 88   x = 8   The answer is 8.
<result>D</result>
Machine P and Machine Q are each used to manufacture 880 sprockets. It takes Machine P 10 hours longer to produce 880 sprockets than Machine Q. Machine Q produces 10% more sprockets per hour than Machine A. How many sprockets per hour does Machine A produce?