Respuesta :
girls : boys = 4 : 1
A. girls : total = 4 : (4+1) = 4 : 5
If girls are 4/5 of the total number of participants, there were (4/5)·200 = 160 girls.
B. There were 200 -160 = 40 boys, There were 160 -40 = 120 more girls than boys.
girls : boys = 4 : 1
A. girls : total = 4 : (4+1) = 4 : 5
If girls are 4/5 of the total number of participants, there were (4/5)·200 = 160 girls.
B. There were 200 -160 = 40 boys, There were 160 -40 = 120 more girls than boys.