Running at the same rate, 8 identical machines can produce 560 paperclips a minute. At this rate, how many paperclips could 15 machines produce in 6 minutes?  Choose the correct choice from the following choices:
A) 1344	B) 6300	C) 8400	D) 50400	E) 67200

Rationale: "8 machines produce 560 in 1 min 8 machines produce 560 * 6 in 6 min 15 machine produce 560 * 6 * ( 15 / 8 ) in 6 minutes 560 * 6 * 15 / 8 = 6300 answer is b ."
Answer: B