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Adirondack Savings Bank (ASB) has $1 million in new funds that must be allocated to home...

Adirondack Savings Bank (ASB) has $1 million in new funds that must be allocated to home loans, personal loans, and automobile loans. The annual rates of return for the three types of loans are 5% for home loans, 11% for personal loans, and 9% for automobile loans. The bank’s planning committee has decided that at least 40% of the new funds must be allocated to home loans. In addition, the planning committee has specified that the amount allocated to personal loans cannot exceed 60% of the amount allocated to automobile loans. (a) Formulate a linear programming model that can be used to determine the amount of funds ASB should allocate to each type of loan to maximize the total annual return for the new funds. If the constant is "1" it must be entered in the box. If your answer is zero enter “0”. Let H = amount allocated to home loans P = amount allocated to personal loans A = amount allocated to automobile loans Max .05 H + .11 P + .09 A s.t. 1 H + 1 P + 1 A ≥ 1000000 Minimum Home Loans .6 H + -.4 P + -.4 A ≤ 0 Personal Loan Requirement 1 H + 1 P + -.06 A = 0 Amount of New Funds (b) How much should be allocated to each type of loan? Loan type Allocation Home $ Personal $ Automobile $ What is the total annual return? If required, round your answer to nearest whole dollar amount. $ What is the annual percentage return? If required, round your answer to two decimal places. % (c) If the interest rate on home loans increases to 9%, would the amount allocated to each type of loan change? - Select your answer - Explain. The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank (d) Suppose the total amount of new funds available is increased by $10,000. What effect would this have on the total annual return? Explain. If required, round your answer to nearest whole dollar amount. An increase of $10,000 to the total amount of funds available would increase the total annual return by $ . (e) Assume that ASB has the original $1 million in new funds available and that the planning committee has agreed to relax the requirement that at least 40% of the new funds must be allocated to home loans by 1%. How much would the annual return change? If required, round your answer to nearest whole dollar amount. $ How much would the annual percentage return change? If required, round your answer to two decimal places.

Solutions

Expert Solution

SOLUTION:

LET THE AMOUNT ALLOTED TO HOME BE "x" , TO PERSONAL LOANS BE "y" AND TO AUTOMOBILE LOANS BE "z" .

OBJECTIVE FUNCTION = 0.05x+0.11y+0.09z. THIS HAS TO BE MAXIMIZED.

CONTRAINS ARE :

1. x>=400000(AT LEAST 40% OF THE NEW FUNDS MUST BE ALLOCATED TO HOME LOANS)

2.y<=0.06z (AMOUNT ALLOCATED TO PERSONAL LOANS CANNOT EXCEEDS 60% OF THE AMOUNT ALLOCATED TO AUTOMOBILE LOANS)

3.x+y+z<=1000000 (TOTAL AMOUNT OF FUNDS IS $ 1 MILLION)

SOLVING THIS IN EXCEL USING THE FUNCTION WE GET:

AMOUNT ALLOCATED TO: (IN $)
HOME LOANS 400000
PERSONAL LOANS 225000
AUTOMOBILE LOANS 375000
FORMULA
TOTAL RETURN 78500 0.05x+0.11y+0.09z
CONSTRAINS
1 400000 >= 400000 x>=400000
2 225000 <= 225000 y<=0.6z
3 1000000 <= 1000000 x+y+z<=1000000

THUS $ 400000 IS ALLOCATED TO HOME LOANS,$225000 IS ALLOCATED TO PERSONAL LOANS, AND $375000 IS ALLOCATED TO AUTOMOBILE LOANS.

TOTAL ANNUAL RETURN=$78500

ANNUAL % RETURN = 78500/1000000=7.85%

IF HOME LOANS RATE BECOMES 9% THEN THE OBJECTIVE FUNCTION WILL BECOME: 0.09x+0.11y+0.09z REVICED.

AMOUNT ALLOCATED TO: (IN $)
HOME LOANS 400000
PERSONAL LOANS 225000
AUTOMOBILE LOANS 375000
FORMULA
TOTAL RETURN 94500 0.09x+0.11y+0.09z
CONSTRAINS
1 400000 >= 400000 x>=400000
2 225000 <= 225000 y<=0.6z
3 1000000 <= 1000000 x+y+z<=1000000

SO, EVEN WHEN THE INTERESR RATE ON HOME LOANS IS INCREASED TO 9% THE AMOUNT ALLOCATED TO EACH TYPE OF LOAN DOES NOT NOT CHANGE. THEY REMAIN THE SAME.

IF TOTAL AMOUNT OF FUNDS AVAILABLE = 1000000+10000 = $ 1010000 THEN THE NEW SOLUTION (WITH 5% ON HOME LOANS I.E., THE ORIGINAL RATES) THEN THE SOLUTION WILL BE:

AMOUNT ALLOCATED TO: (IN $)
HOME LOANS 404000
PERSONAL LOANS 227250
AUTOMOBILE LOANS 378750
FORMULA
TOTAL RETURN 79283.50 0.05x+0.11y+0.09z
CONSTRAINS
1 400000 >= 404000 x>=400000
2 225000 <= 227250 y<=0.6z
3 1000000 <= 1010000 x+y+z<=1010000

THUS TOTAL ANNUAL RETURN AMOUNT INCREASES TO $79283.50 AND TOTAL ANNUAL % =79283.50/1010000=7.850% REMAINS THE SAME.

IF ONLY 39% (i.e. 40%-1%) OF FUNDS ARE ALLOTTED TO HOME LOANS THEN:

AMOUNT ALLOCATED TO: (IN $)
HOME LOANS 390000
PERSONAL LOANS 228750
AUTOMOBILE LOANS 381250
FORMULA
TOTAL RETURN 78975 0.05x+0.11y+0.09z
CONSTRAINS
1 400000 >= 390000 x>=400000
2 225000 <= 228750 y<=0.6z
3 1000000 <= 1000000 x+y+z<=1000000

THUS ANNUAL RETURN WILL BECOME $78975 AND ANNUAL PERCENTAGE RETURN WILL BE 789750/1000000 =7.897 %.

  THANK YOU PLEASE VOTEUP!!!!!


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