The average of 21 numbers is 25. The average of first ten numbers is 18 and the average of last ten numbers is 32. What is the middle number?  Choose the correct option:	A) 195	B) 175	C) 184	D) 201	E) 188
The total of 21 numbers = 21X25 = 525   The total of first 10 and last 10 numbers is = 10 X 14+10 X 19 = 330   So, the middle number is  (525 - 330 )= 
<gadget id="calculator"> (525 - 330 )</gadget>
<output>195</output>
195   195
<result>A</result>
The average of 21 numbers is 25. The average of first ten numbers is 18 and the average of last ten numbers is 32. What is the middle number?