Bunuel wrote:
Operating at the same constant rate, 4 identical machines can produce a total of 220 candles per minute. At this rate, how many candles could 10 such machines produce in 5 minutes?
(A) 512
(B) 2,200
(C) 2,750
(D) 11,000
(E) 44,000
Another approach is to take the given information and
work towards the answer in stepsGIVEN:
4 machines produce
220 candles per
ONE minute
So,
4 machines produce
1100 candles per
FIVE minutes
(a 5 times increase in time means a 5 times increase in output)10 machines produce
2750 candles per
FIVE minutes
(a 2.5 times increase in machines means a 2.5 times increase in output)Answer: C
Cheers,
Brent
_________________
Brent Hanneson - founder of Greenlight Test PrepSign up for our GRE Question of the Day emails