A customer has a total purchase of $84.75. She hands the person at the register four $20 bills, three $1 bills, six quarters, one dime, one nickel, and five pennies. Which of the following is true?

A.
The customer has overpaid by $0.05.

B.
The customer has paid the exact correct amount.

C.
The customer still owes $0.05.

D.
The customer still owes $0.25.

To find the answer to this question, we need to calculate the total amount of money that the customer has given to the person at the register and then compare it to the total purchase amount.

Let's break down the amount given by the customer:

- Four $20 bills: 4 * $20 = $80
- Three $1 bills: 3 * $1 = $3
- Six quarters: 6 * $0.25 = $1.50
- One dime: $0.10
- One nickel: $0.05
- Five pennies: 5 * $0.01 = $0.05

Now let's add up all these amounts:

$80 + $3 + $1.50 + $0.10 + $0.05 + $0.05 = $84.70

So, the customer has given a total of $84.70 to the person at the register.

Now, let's compare this to the total purchase amount:

Total purchase amount = $84.75

Since $84.70 is less than $84.75, the correct answer is:

C. The customer still owes $0.05.

The customer has not paid the exact correct amount and still owes $0.05 to complete the purchase.

To determine if the customer has paid the exact correct amount, we need to calculate the total value of the money she handed to the cashier.

The customer gave 4 $20 bills, so that's 4 * $20 = $<<4*20=80>>80.
The customer gave 3 $1 bills, so that's 3 * $1 = $<<3*1=3>>3.
The customer gave 6 quarters, so that's 6 * $0.25 = $<<6*0.25=1.50>>1.50.
The customer gave 1 dime, so that's 1 * $0.10 = $<<1*0.10=0.10>>0.10.
The customer gave 1 nickel, so that's 1 * $0.05 = $<<1*0.05=0.05>>0.05.
The customer gave 5 pennies, so that's 5 * $0.01 = $<<5*0.01=0.05>>0.05.

Adding up all the amounts, the total value of the money is $80 + $3 + $1.50 + $0.10 + $0.05 + $0.05 = $<<80+3+1.5+0.1+0.05+0.05=84.7>>84.70.

The customer paid a total of $84.70, which is $84.75 less than the total purchase amount.

Therefore, the customer still owes $0.05.

The correct answer is C. The customer still owes $0.05.

To find out if the customer has paid the exact correct amount or if they still owe money, we need to calculate the total value of the money they handed to the person at the register.

The customer gave:
4 * $20 = $<<4*20=80>>80
3 * $1 = $<<3*1=3>>3
6 * $0.25 = $<<6*0.25=1.50>>1.50
1 * $0.10 = $<<1*0.10=0.10>>0.10
1 * $0.05 = $<<1*0.05=0.05>>0.05
5 * $0.01 = $<<5*0.01=0.05>>0.05

The total value of the money given by the customer is:
$80 + $3 + $1.50 + $0.10 + $0.05 + $0.05 = $<<80+3+1.50+0.10+0.05+0.05=84.75>>84.75

Since the total value of the money given by the customer matches the total purchase amount of $84.75, the correct answer is:

B. The customer has paid the exact correct amount.