3. A hank has $BED.DDD in assets to allocate among investments in bonds, home mortgages. car loans, and personal loans. Bonds are expected to produce a return of 10%, mortgages 3.5%. car loans 9.5%. and personal loans 12.5% To make sure the portfolio is not too risky. the hank wants to restrict personal loans to no more than sass of the total portfolio. The hank also WHEEL to ensure diat more mane}.Ir is invested in mortgages than in personal loans. It also wants to invest more in bonds than in personal loans. Formulate (write down in mathematical form] an LP model for this problem with the objective of maximizing the expected return on the portfolio