Machine A produces 100 parts twice as fast as Machine B does. Machine B produces 100 parts in 40 minutes. If each machine produces parts at a constant rate, how many parts does Machine A produce in 10 minutes?	Choose the correct option.
A) 20
B) 50
C) 60
D) 40
E) 30
Machine B produces 100 part in 40 minutes. Machine A produces 100 parts twice as fast as B, so Machine A produces 100 parts in  40/2= 
<gadget id="calculator"> 40/2</gadget>
<output>20</output>
20 minutes.   Now, Machine A produces 100 parts in 20 minutes which is 100/20= 
<gadget id="calculator">100/20</gadget>
<output>5</output>
5 parts/minute.   5 parts X a total of 10 minutes= 50   50
<result>B</result>
Machine A produces 100 parts twice as fast as Machine B does. Machine B produces 100 parts in 40 minutes. If each machine produces parts at a constant rate, how many parts does Machine A produce in 10 minutes?