※ 引述《shaoying (我的舌頭竟然淤青)》之銘言： : 153. 15587-!-item-!-187;#058&010762 : At a certain supplier, a machine of type A costs $20,000 : and a machine of type B costs $50,000. Each machine can : be purchased by making a 20 percent down payment and repaying : the remainder of the cost and the finance charges over a : period of time. If the finance charges are equal to 40 percent : of the remainder of the cost, how much less would 2 machines of : type A cost than 1 machine of type B under this arrangement? 題目大致上是說 可以分期付款 先付頭期款20% 接下來的錢利息是40%去算 問買兩台A跟買一台B的價錢差多少 A頭期款:(20,000*2)*20% = 8000 A尾款:(40,000-8000)*1.4= 44,800 B頭期款:50,000*20% = 10,000 B尾款:(50,000-10,000)*1.4 = 56,000 在把兩個的頭起款跟尾款相加就等於總共要付的錢 相減就可以得到兩個的差是13,200 我想你應該是題目看不太懂吧 計算不難的 : (A) $10,000 : (B) $11,200 : (C) $12,000 : (D) $12,800 : (E) $13,200 : Ans:E；我連題目都不太曉得在幹麻，拜託幫忙了，謝謝！ --

※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.120.80.19