Scott's average (arithmetic mean) golf score on his first four rounds was 18.What score does he need on his fifth round to drop his average score by 2 points? Choose the correct choice from the following choices
A) 68  B) 72  C) 8  D) 88  E) 312
Average score for first 4 rounds = 18   Average score after 5 rounds = 16   Score Scott needs on his 5th round to drop average score by 2 points = 18 - (2*5)= 
<gadget id="calculator">18 - (2*5)</gadget>
<output>8</output>
8   Answer 8
<result>C</result>
Scott's average (arithmetic mean) golf score on his first four rounds was 18.What score does he need on his fifth round to drop his average score by 2 points?