(4600-100 x-3200)* 10x = 64000
(14-x)x=64
(x-7)^2+15=0
沒有答案
如果旅遊團能盈利24000元,
(4600-100 x-3200)* 10x = 24000
(14-x)x=24
(x-7)^2=25
X=2,或x=12