Answer:
$13,287.70
Explanation:
first we must calculate the future value:
future value of stock account = $850 x [(1 + 0.1/12)³⁶⁰ - 1 ] / (0.1/12) = $1,921,415
future value of bond account = $350 x [(1 + 0.06/12)³⁶⁰ - 1 ] / (0.06/12) = $351,580
total future value = $2,272,995
monthly withdrawal = value of account / PVIFA
PVIFA, 300 periods, 0.4167% = [1 - 1/(1 + 0.05/12)³⁰⁰] / (0.05/12) = 171.06
monthly withdrawal = $2,272,995 / 171.06 = $13,287.70