If 20 typists can type 44 letters in 20 minutes, then how many letters will 30 typists working at the same rate complete in 1 hour?
Choose the correct choice from the following options:
A) 63	B) 72	C) 198	D) 216	E) 400
20 typists can type 44 letters, so 30 typists can type = 44*30/20   44*30/20 letters can be typed in 20 mins. In 60 mins typist can type= 44*30*60/20*20= 198   198 is the answer
<result>C</result>
If 20 typists can type 44 letters in 20 minutes, then how many letters will 30 typists working at the same rate complete in 1 hour?