做的两道Asset Allocation的练习题:
1.A foundation has a spending rate of 8%. If inflation is expected to be 3.50% annually and the cost of earning investment returns is 0.005%
r = s + l + c = 8 + 3.5 + 0.005 = 11.505% or 11.51%
2.An investor has a spending rate of 6%. If inflation is expected to be 4.50% annually and the cost of earning investment returns is 0.5%
r = (1 + s)(1 + i)(1 + c) – 1 = (1.06)(1.045)(1.005) – 1 = 11.32%
想问一下什么时候 只用加法,什么时候要 连乘?能否详细讲解一下?