Just multiply the 3 by anything and the 5 by the same thing, and you'll get an equivelant fraction. For example, 3 times two is six, and 5 times two is ten, so six tenths (6/10) or 9/15 , or 12/20,...
8Just multiply the 4 by anything and the 10 by the same thing, and you'll get an equivelant fraction. For example, 4 times two is eight, and 10 times two is twenty, so eight twentieths (8/20) or...