The average of the five numbers is 6.8. If one of the numbers is multiplied by 3, the average of the numbers increases to 9.2. Which of the five numbers is multiplied by 3? Choose the most appropriate option:
A) 1.5 B) 3.0 C) 3.9 D) 4.0 E) 6.0
Initial avg is 6.8   So the summation of the nos is  6.8*5= 
<gadget id="calculator"> 6.8*5</gadget>
<output>34</output>
34   Now the new avg is 9.2   So summation will be 9.2*5= 
<gadget id="calculator">9.2*5</gadget>
<output>46</output>
46.   So change in summation is 12.   This comes when a number is multiplied by 3.   In the original sum we already have that number added once. To bring additional 12 increment by multiplying by 3, we get a total increase of 18. Thus, 6 is multiplied by 3.   ANSW6.0R:6.0
<result>E</result>
The average of the five numbers is 6.8. If one of the numbers is multiplied by 3, the average of the numbers increases to 9.2. Which of the five numbers is multiplied by 3?