親愛的考生，為了幫助廣大學(xué)員在2015年CFA備考中取得良好的成績，金程網(wǎng)校為大家開設(shè)了CFA考試專欄，每天分享老師精心帶來的CFA歷年真題以及考試答案的詳細解析，幫助學(xué)員在學(xué)習(xí)中快速的提升考試成績，加強練習(xí)。
1、The market for radios consists of 100consumers, each ofwhom has the demand function: QDradio = 4 − 0.4 Pradio+ 0.0025 Income +0.25 Pnewspaper − 0.005 Pbatteries At current average prices, a radio costs Â￡10, anewspapercosts Â￡1, and batteries cost Â￡2. Average income isÂ￡1,000. The market demandcurve for radios is most accuratelydescribed as:
(A) 400 − 40 Pradio + 0.25 Income + 25 Pnewspaper − 0.5 Pbatteries.
(B) 16.85 − 0.025 QDradio.
(C) 674 − 40 Pradio.
答案 B
Aggregating the individual demand functionsinto the marketdemand function we get:
QDradio = 100(4 − 0.4 Pradio + 0.0025Income +0.25 Pnewspaper − 0.005 Pbatteries)
QDradio = 400 − 40 Pradio + 0.25 Income +25Pnewspaper − 0.5 Pbatteries
Substituting average values for all variablesexcept pricewe get:
QDradio = 400 − 40 Pradio + 0.25(1,000)+25(1) − 0.5(2)
QDradio = 400 − 40 Pradio + 250 + 25 − 1
QDradio = 674 − 40 Pradio
40 Pradio = 674 − QDradio
Solving for price gives us the demandcurve:
Pradio = 16.85 − 0.025 QDradio
【溫馨提示】系統(tǒng)的、成套的練習(xí)做題。不只是拘泥于CFA歷年真題，要開放思路。這段做題主要在于養(yǎng)成一個良好的答題習(xí)慣，要學(xué)會合理分配時間。這樣在考試時才不會緊張、驚慌。
