Of the numbers, average of the first five is 16 and that of the last five is 20. if the last number is 20. find the first number?  Choose the correct choice from the following options:
A) 20	B) 0	C) 24	D) 26	E) 28
Explanation :   Solution: Let the 6 numbers be a, b, c, d, e and 20. then, given   =&gt; a + b + c + d + e/5 =16   =&gt; b + c + d + e + 20/5 =20   Solve those two equations then we will get a = 0.   .'. first number = 0.   Answer : 0
<result>B</result>
Of the numbers, average of the first five is 16 and that of the last five is 20. if the last number is 20. find the first number?