Machine A produces 100 parts twice as fast as Machine B does. Machine B produces 100 parts in 20 minutes. If each machine produces parts at a constant rate, how many parts does Machine A produce in 8 minutes?	Choose one:  A) 100  B) 90  C) 80  D) 30  E) 50
Machine B produces 100 part in 20 minutes. Machine A produces 100 parts twice as fast as B, so Machine A produces 100 parts in  20/2= 
<gadget id="calculator"> 20/2</gadget>
<output>10</output>
10 minutes.   Now, Machine A produces 100 parts in 10 minutes which is 100/10= 
<gadget id="calculator">100/10</gadget>
<output>10</output>
10 parts/minute.   10 parts X a total of 8 minutes= 80   80
<result>C</result>
Machine A produces 100 parts twice as fast as Machine B does. Machine B produces 100 parts in 20 minutes. If each machine produces parts at a constant rate, how many parts does Machine A produce in 8 minutes?