Respuesta :
60% are girls, so 40% are boys
40%= 0.4
30/ 0.4 = 75 ...total boys and girls
75 - 30 = 45
answer: 45 (third choice)
40%= 0.4
30/ 0.4 = 75 ...total boys and girls
75 - 30 = 45
answer: 45 (third choice)