Of the teams competing in the world archery championships, Thirty 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.  Options
A) 10/20	B) 30/20	C) 13/15	D) 17/20	E) 13/17
Half as manymeans half of EU, then   EU 30%   US 15%   10/20F 5%   the rest is 50%, answer 10/20
<result>A</result>
Of the teams competing in the world archery championships, Thirty 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.