Answer:
CD $ 70,000
Mutual fund $ 10,000
maximum return $ 6,200
Step-by-step explanation:
we want to maximize return considering the following restrain
mutual fund > 10,000
certificate of deposit = > 2mutual fund
CD + Mutual Fund = 80,000
as the certificate yield is higher than mutual we will invest the minimum in mutual and the rest in the CD which will fullfil the requirement of at least twice as much invested in CD.
return = CD x 0.08 + mutual x 0.06
return = (80,000 - 10,000) x 0.08 + 10,000 x 0.06
return = 5,600 + 600 = 6,200