I call this one the Donal Rumsfeld problem because there are many unknowns.
Machine A and Machine B can produce 1 widget in 3 hours working together at their respective constant rates. If Machine A's speed were doubled, the two machines could produce 1 widget in 2 hours working together at their respective rates. How many hours does it currently take Machine A to produce 1 widget on its own?
A) 1/2
B) 2
C) 3
D) 5
E) 6
Enjoy!
Machine A and Machine B can produce 1 widget in 3 hours working together at their respective constant rates. If Machine A's speed were doubled, the two machines could produce 1 widget in 2 hours working together at their respective rates. How many hours does it currently take Machine A to produce 1 widget on its own?
A) 1/2
B) 2
C) 3
D) 5
E) 6
Enjoy!
