Respuesta :
u do 4/20 = p/100 then u cross multiply the 4 with 100 getting u 400, then divide the 400 by 20, giving u the answer of 20%
You would divide 9 by 20 and get 45% and then you would subtract it from a 100% and get a total of 55% of the students will not attend the worldwide day of play at RMS
