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

If 4 identical machine produce a total of 220 candles per minute,

they would produce 1100 candles in 5 minutes.

Since we have been asked to find how many candles 10 such machines make,

we could get that by multiplying the candles by a factor of 2.5(because 4*2.5 = 10)

Therefore, 10 such machines produce 1100*2.5 = 2750 candles

(Option C)
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