En colima se lleva acabo la conferencia sobre la energética eólica a la cual asistieron 120 representantes de latinoamérica y sudamérica 1/6 argentinos 1/5 chilenos 1/4 bolivianos 1/4 venezolanos y el resto de norteamérica cuantos norteamericanos asistieron a la conferencia del energética eólica

The first thing we must do for this case is to see how many representatives from each country attended.
 We have then:
 Argentines = (1/6) * (120) = 20
 Chileans = (1/5) * (120) = 24
 Bolivians = (1/4) * (120) = 30
 Venezuelans = (1/4) * (120) = 30
 Adding we have:
 20 + 24 + 30 + 30 = 104
 Therefore the number of Americans is:
 120-104 = 16
 
 16 Americans attended the wind energy conference

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