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If 10k is deposited in C.A , earnings = 300 and earnings from remaining 10k in S.A is 400. Giving a total of 700.
All other variations have lesser earnings. Eg:
If C.A = 12k , incentive= 300 & S.A = 8k, interest = 320. Total = 620
If C.A = 14k , incentive = 500 & S.A = 6k, interest = 180. Total = 680
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Hana has decided to join a credit union, where she will open two accounts: a checking account and a savings account.

The credit union offers incentives to new checking account customers: If a customer deposits at least €6,000 but less than €10,000 into their checking account, the credit union will add an additional €100 to the initial checking account balance. If a customer deposits at least €10,000 but less than €14,000 into their checking account, the credit union will add an additional €300 to the initial checking account balance. If a customer deposits at least €14,000 into their checking account, the credit union will add an additional €500 to the initial checking account balance. Checking accounts do not earn any interest.

For new savings accounts with initial deposits of at least €8,000, the account earns interest at an annual rate of 4%. All other new savings accounts earn interest at an annual rate of 3%.

Hana will make an initial deposit at the beginning of the year totaling €20,000, distributed across both accounts such that her total year-end balance will be maximized. There will be no other transactions on either account for the entire year except for the incentives and interest income described above.

In the first column of the table, select the amount that Hana will deposit into the checking account. In the second column of the table, select the amount that Hana will deposit into the savings account. Make only two selections, one in each column.
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From the question, we can argue that savings account offer the highest interest rate above 8000 euros.

Since the least amount in checking account can be 6000euros to receive an additional 100 euros, we can distribute 6000 euros in the checking account and 14000 euros in the savings account.

Therefore, Checking account = 6000 euros and Savings account = 14000 euros
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Calculate %age: For Checking Account
1. 6000 - 10000 = Max return - (100/6000)*100 = 1.66
10000-14000 = Max return - (300/10000)*100 = 3%
<= 14000 = Max return - (500/14000)*100 = 3.57%

For Saving Account:
<= 8000 = Return = 4%; (Amount Here should be Maximum for Max Profit)
> 8000 = Return = 3%;
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1) 14,000 in Checking, 6,000 in Savings
Checking: Incentive=500, Total= 14,500.
Savings: Interest=3% of 6,000 = 180, Total= 6,180.
Combined Total= 20,680.

2) 10,000 in Checking, 10,000 in Savings
Checking: Incentive= 300, Total= 10,300.
Savings: Interest= 4% of 10,000 = 400, Total=10,400.
Combined Total= 20,700.

3) 6,000 in Checking, 14,000 in Savings
Checking: Incentive= 100, Total= 6,100.
Savings: Interest= 4% of 14,000 = 560, Total= 14,560.
Combined Total= 20,660.

Therefore 10000 in checking and 10000 in saving is the optimal choice.

10,000 in Checking, incentive= 300).
10,000 in Savings interest=4% of 10000= 400. Combined Total= 10000+300+10400= 20700.
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Hana should distribute €20000 equally in the current and savings account. This will give her the maximum balance at the year-end.

In current account, she will get an incentive of €300.

In savings account, she will earn an interest of 4% i.e. €400

Total balance at the year-end = € 20000 + €300 + €400 = €20700

So, she should deposit:
Current Account: €10000
Savings account: €10000

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Hana has decided to join a credit union, where she will open two accounts: a checking account and a savings account.

The credit union offers incentives to new checking account customers: If a customer deposits at least €6,000 but less than €10,000 into their checking account, the credit union will add an additional €100 to the initial checking account balance. If a customer deposits at least €10,000 but less than €14,000 into their checking account, the credit union will add an additional €300 to the initial checking account balance. If a customer deposits at least €14,000 into their checking account, the credit union will add an additional €500 to the initial checking account balance. Checking accounts do not earn any interest.

For new savings accounts with initial deposits of at least €8,000, the account earns interest at an annual rate of 4%. All other new savings accounts earn interest at an annual rate of 3%.

Hana will make an initial deposit at the beginning of the year totaling €20,000, distributed across both accounts such that her total year-end balance will be maximized. There will be no other transactions on either account for the entire year except for the incentives and interest income described above.

In the first column of the table, select the amount that Hana will deposit into the checking account. In the second column of the table, select the amount that Hana will deposit into the savings account. Make only two selections, one in each column.
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Check Savings

6000 14000 - 100 + 560 = 660

8000 12000 - 100 + 480 = 580

10000 10000 - 300 + 400 = 700

12000 8000 - 300 + 320 = 620

14000 6000 - 500 + 180 = 680

So 10000 10000 is solution for this
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Looking at the extreme cases of having maximum values in both accounts having 14k in the checking account and 6k in the savings accounts yields the most return of 680 hence EA
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Hana has decided to join a credit union, where she will open two accounts: a checking account and a savings account.

The credit union offers incentives to new checking account customers: If a customer deposits at least €6,000 but less than €10,000 into their checking account, the credit union will add an additional €100 to the initial checking account balance. If a customer deposits at least €10,000 but less than €14,000 into their checking account, the credit union will add an additional €300 to the initial checking account balance. If a customer deposits at least €14,000 into their checking account, the credit union will add an additional €500 to the initial checking account balance. Checking accounts do not earn any interest.

For new savings accounts with initial deposits of at least €8,000, the account earns interest at an annual rate of 4%. All other new savings accounts earn interest at an annual rate of 3%.

Hana will make an initial deposit at the beginning of the year totaling €20,000, distributed across both accounts such that her total year-end balance will be maximized. There will be no other transactions on either account for the entire year except for the incentives and interest income described above.

In the first column of the table, select the amount that Hana will deposit into the checking account. In the second column of the table, select the amount that Hana will deposit into the savings account. Make only two selections, one in each column.
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Is there a quicker way to solve this without trying out all the options stated below?
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for the 12 Days of Christmas Competition

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Hana has decided to join a credit union, where she will open two accounts: a checking account and a savings account.

The credit union offers incentives to new checking account customers: If a customer deposits at least €6,000 but less than €10,000 into their checking account, the credit union will add an additional €100 to the initial checking account balance. If a customer deposits at least €10,000 but less than €14,000 into their checking account, the credit union will add an additional €300 to the initial checking account balance. If a customer deposits at least €14,000 into their checking account, the credit union will add an additional €500 to the initial checking account balance. Checking accounts do not earn any interest.

For new savings accounts with initial deposits of at least €8,000, the account earns interest at an annual rate of 4%. All other new savings accounts earn interest at an annual rate of 3%.

Hana will make an initial deposit at the beginning of the year totaling €20,000, distributed across both accounts such that her total year-end balance will be maximized. There will be no other transactions on either account for the entire year except for the incentives and interest income described above.

In the first column of the table, select the amount that Hana will deposit into the checking account. In the second column of the table, select the amount that Hana will deposit into the savings account. Make only two selections, one in each column.
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Hi Bunuel, can you help me if I am missing something here. If we put all in savings accounts then she can make $800. Even if its necessary to have both the accounts then maybe 19999 and 1 can be the split. Its not given that minimum requirement is 6000 for checking account.
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gullyboy09
Hi Bunuel, can you help me if I am missing something here. If we put all in savings accounts then she can make $800. Even if its necessary to have both the accounts then maybe 19999 and 1 can be the split. Its not given that minimum requirement is 6000 for checking account.
Hi!

Good thinking! You’re right that, if that option were presented, it would result in a higher total year-end balance. We probably should have included some language to indicate that Hana is choosing the best way to maximize the end-of-year-balance from among the distribution options listed, or a constraint that Hana must deposit a minimum of $6,000 in each account. Kudos for catching that, and apologies for the confusion!

This problem – and that line of thought — does present a good reason to look at the answers before calculating, though!


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