[計量] 猴哥數學問題

看板GRE (GRE入學考試)作者 (BB)時間15年前 (2011/05/27 11:29), 編輯推噓1(102)
留言3則, 1人參與, 最新討論串1/1
57. 題 給你一個bar chart 我的問題是II選項為什麼錯 想來想去只能硬挑出毛病說他沒有講HOUSEHOLD 不然我覺得I II III全對 66.To obtain an FHA mortgage for $50000 or more, the home buyer must have a down payment equal to 4% of the first $25000 of the mortgage amount and 5% of the portion in excess of $25000. At settlement the buyer pays a mortgage-insurance premium equal to 3% of the mortgage amount. What's the max. FHA mortgage, if any, abuyer can obtain if the buyer has only $6000 availible for the down payment and insurance premium. 答案是C 的 $78125 想不通而且不太懂他要問甚麼 感謝解答!!! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 180.177.3.147

05/27 11:45, , 1F
第二題設 mortage=x
05/27 11:45, 1F

05/27 11:46, , 2F
25000*0.04 + (x-25000)*0.05 + x*0.03 = 6000
05/27 11:46, 2F

05/27 11:46, , 3F
=> x=78125
05/27 11:46, 3F
文章代碼(AID): #1DtngAmy (GRE)
文章代碼(AID): #1DtngAmy (GRE)