Respuesta :
20 parts --- 5
1 part --- 5/20 = 1/4
13 parts --- 13/4 = 3.25
7 parts --- 7/4 = 1.75
1 part --- 5/20 = 1/4
13 parts --- 13/4 = 3.25
7 parts --- 7/4 = 1.75