设学生人数为x人 ,甲的总收费为y元,乙的总收费为Y元,得
y=500+50%500x
Y=60%500(x+1)
若y=Y,则500+50%500x=60%500(x+1),得x=4
若y>Y,则500+50%500x>60%500(x+1),得x
设学生人数为x人 ,甲的总收费为y元,乙的总收费为Y元,得
y=500+50%500x
Y=60%500(x+1)
若y=Y,则500+50%500x=60%500(x+1),得x=4
若y>Y,则500+50%500x>60%500(x+1),得x