In a set of three numbers,the difference between the largest and the second largest numbers is added to the smallest number.The average of the largest,second largest and the new number formed exceeds the average of the original three numbers by 5.The largest number exceeds the second largest number by how much ?  Choose the most appropriate option:
A) 5
B) 10
C) 15
D) 30
E) 60
Let the numbers in increasing order be A&lt;B&lt;C...   since the new number(N) increase the average of new set of numbers by 5 after replacing the smallest number,A,   the new number,N, exceeds the smallest,A, by  3*5= 
<gadget id="calculator"> 3*5</gadget>
<output>15</output>
15 or N=15+A..(1)   and what is the new number,N,---- C-B (diff in the largest and second largest)+A...(2)...   from (1) &amp; (2) C-B=15...   Answer:-15
<result>C</result>
In a set of three numbers,the difference between the largest and the second largest numbers is added to the smallest number.The average of the largest,second largest and the new number formed exceeds the average of the original three numbers by 5.The largest number exceeds the second largest number by how much ?