A football player scores 5 goals in his fifth match thus increasing his average goals score by 0.2. The total number of goals in his 5 matches would be  Choose the correct answer
A) 14
B) 16
C) 18
D) 10
E) 21
While this question can be solved with a rather straight-forward algebra approach (as the other posters have noted), it can also be solved by TESTing THE ANSWERS. One of those numbers MUST be the total number of goals...   From a tactical standpoint, it's best to TEST either Answer B or Answer D, so if the answer is not correct, then you would have a gauge for whether you should gohigherorlowerwith your next TEST.   Here, I'll start with Answer E =21 goals   If....   Total goals = 21 goals   5th game = 5 goals   1st 4 games = 16 goals   Avg. for 1st 4 games = 16/4= 
<gadget id="calculator">16/4</gadget>
<output>4</output>
4 goal/game   Avg. for all 5 games= 21/5= 
<gadget id="calculator">21/5</gadget>
<output>21/5 = around 4.2</output>
4.2 goals/game   This is an 21XACT MATCH for what we're told in the prompt, so Answer 21 MUST be the answer.
<result>E</result>
A football player scores 5 goals in his fifth match thus increasing his average goals score by 0.2. The total number of goals in his 5 matches would be