The average of 10numbers is 60. Out of 10numbers the average of first 6no. is 68, and last 6numbers is 75 then find 7th number?
Choose the correct choice from the following
A) A)78	B) B)65	C) C)258	D) D)62	E) E)48
7th number = sum of 1st 6no.s + sum of last 6no.s - sum of 11no.s   answer = 6*68+6*75-10*60= 
<gadget id="calculator">6*68+6*75-10*60</gadget>
<output>258</output>
258   Answer is 258
<result>C</result>
The average of 10numbers is 60. Out of 10numbers the average of first 6no. is 68, and last 6numbers is 75 then find 7th number?