Machine A and machine B are each used to manufacture 660 sprockets. It takes machine A 10 hours longer to produce 660 sprockets than machine B. Machine B produces 10 percent more sprockets per hour than machine A. How many sprockets per hour does machine A produces?  Choices: A) 6 B) 6.6 C) 60 D) 100 E) 110
B takes x hours   6 takes x + 10 hours   rate of 6 = 660/x+10   rate of B = 660/x   thus, 660/x = (660/x+10)*1.10   x = 100   so B = 100   6 = 110 sprockets per hour    660/110= 
<gadget id="calculator"> 660/110</gadget>
<output>6</output>
6   6NSWER:6
<result>A</result>
Machine A and machine B are each used to manufacture 660 sprockets. It takes machine A 10 hours longer to produce 660 sprockets than machine B. Machine B produces 10 percent more sprockets per hour than machine A. How many sprockets per hour does machine A produces?