Of the teams competing in the world archery championships, Forty percent are from Europe. Half as many are from the United States and one twentieth are from Africa. What fraction of teams are from neither Europe, the US or Africa.  Choose the correct choice from the following answers
A) 13/20  B) 15/20  C) 13/15  D) 17/20  E) 7/17
Assume 100 total people.   40% of 100 = 40 ---&gt;Europeans   1/2 of 40 ---&gt; 20 Americans   1/20 of 100 ---&gt; 5 Africans   Now you would add them all up, and minus it by the total (100). 100 - 65= 35. So, 35 people out of 100 are not EU, US or Africans. 35/100 is also equal to 7/20.   So therefore, the answer is 7/17.
<result>E</result>
Of the teams competing in the world archery championships, Forty percent are from Europe. Half as many are from the United States and one twentieth are from Africa. What fraction of teams are from neither Europe, the US or Africa.