NO.PZ201904240100002102
问题如下：
2. Calculate the investment's time-weighted rate of return:
选项：
A.18.04%.
B.20%.
C.18.57%.
D.19.28%.
解释：
D is correct.
考点：求time-weighted rate of return
解析：.
time-weighted return=
不用加上分红吗
NO.PZ201904240100002102 20%. 18.57%. 19.28%. is correct. 考点求time-weighterate of return 解析. HPR 1 =(70+2)/60−1=20% , HPR 2 =(160+6)/140−1=18.57% HPR_{\;1}\;=(70+2)/60-1=20\%\;,\;HPR_{\;2}\;=(160+6)/140-1=18.57\%\;HPR1=(70+2)/60−1=20%,HPR2=(160+6)/140−1=18.57% time-weightereturn= [(1.2)(1.1857)]0.5−1=19.28%{\lbrack(1.2)(1.1857)\rbrack}^{0.5}-1=19.28\%[(1.2)(1.1857)]0.5−1=19.28% 买第二支股票花了70,买第一只股票花了60，为什么要用70*2？哪句话说了买第一只股票是花了70？
NO.PZ201904240100002102 20%. 18.57%. 19.28%. is correct. 考点求time-weighterate of return 解析. HPR 1 =(70+2)/60−1=20% , HPR 2 =(160+6)/140−1=18.57% HPR_{\;1}\;=(70+2)/60-1=20\%\;,\;HPR_{\;2}\;=(160+6)/140-1=18.57\%\;HPR1=(70+2)/60−1=20%,HPR2=(160+6)/140−1=18.57% time-weightereturn= [(1.2)(1.1857)]0.5−1=19.28%{\lbrack(1.2)(1.1857)\rbrack}^{0.5}-1=19.28\%[(1.2)(1.1857)]0.5−1=19.28% 请问这里的分母为什么是140？没有说要买2个股票啊，只是说又花70额外买了一支啊？
20%. 18.57%. 19.28%. is correct. 考点求time-weighterate of return 解析. HPR 1 =(70+2)/60−1=20% , HPR 2 =(160+6)/140−1=18.57% HPR_{\;1}\;=(70+2)/60-1=20\%\;,\;HPR_{\;2}\;=(160+6)/140-1=18.57\%\;HPR1=(70+2)/60−1=20%,HPR2=(160+6)/140−1=18.57% time-weightereturn= [(1.2)(1.1857)]0.5−1=19.28%{\lbrack(1.2)(1.1857)\rbrack}^{0.5}-1=19.28\%[(1.2)(1.1857)]0.5−1=19.28% 这道题我是仿照讲义上124页例题这样做的，算出来不对，请问是哪个地方的思路错了呢？
