Linear Programming Models Model 1 (With 0.05 as Maximum Risk Index) Decision Variables Let GF = dollar amount of investment in growth stock fund IF = dollar amount of investment in income fund MMF = dollar amount of investment in money market fund Objective Function: Max 0.18GF + 0.125 +0.075MMF Constraints: Original Constraints: Subject to: GF > (GF + IF + MMF) 20% Growth Fund Lower Bound GF S (GF + IF + MMF) 40% Growth Fund Upper Bound IF 2 (GF + IF + MMF) 20% Income Fund Lower Bound IF S (GF + IF + MMF) 50% Income Fund Upper Bound MMF 2 (GF + IF + MMF) 30% Money Market Lower Bound GF + IF + MMF