Bunuel wrote:
One machine, working at a constant rate, can fill a certain production order in 8 hours. How long would it take four identical machines, working at the same constant rate, to fill the order?
A. 2 hours
B. 4 hours
C. 8 hours
D. 16 hours
E. 32 hours
Work done in 1 hr = 1/8
Work done by 4 machines in 1 hr = 1/2
So full work will be done in 2 hrs.
Ans is option A
Sent from my A0001 usingGMAT Club Forum mobile app
...
