A customer wants to buy two pairs of jeans at $30 each. The sales tax is 6%. He has a gift certificate for $50 and a $20 bill in his wallet. Which of the following represents the correct amount of change the customer should receive?

A.
One $5 bill, one $1 bill, 1 quarter, and 1 dime

B.
One $10 bill, three $1 bills, 2 quarters, and 1 dime

C.
One $5 bill, one $1 bill, and 4 dimes

D.
Two $5 bills
To calculate the total cost of two pairs of jeans at $30 each, we multiply $30 by 2, which equals $<<30*2=60>>60.
Next, we calculate the amount of sales tax by multiplying $60 by 6%, which is (60 * 0.06) = $<<60*0.06=3.6>>3.6.
The total amount the customer needs to pay is (60 + 3.6) = $<<60+3.6=63.6>>63.6.
The customer's gift certificate is $50, and he has $20 in his wallet. So, the total amount the customer has to subtract from the $63.6 is $50 + $20 = $<<50+20=70>>70.
Therefore, the correct amount of change the customer should receive is $70 - $63.6 = $<<70-63.6=6.4>>6.4.
Since the options only include whole dollar amounts, the customer should receive $6 as change.
Thus, the correct option is A. One $5 bill, one $1 bill, 1 quarter, and 1 dime.
To find the correct amount of change the customer should receive, we need to calculate the total cost of the two pairs of jeans and subtract it from the total amount the customer has.
The cost of each pair of jeans is $30, so the total cost of two pairs of jeans is 2 * $30 = $60.
The sales tax is 6%, which means an additional 6% of $60 needs to be added to the total cost. 6% of $60 is (6/100) * $60 = $3.60.
Adding the sales tax to the total cost, the final amount to be paid is $60 + $3.60 = $63.60.
The customer has a gift certificate worth $50 and a $20 bill in his wallet, so the total amount the customer has is $50 + $20 = $70.
To calculate the correct amount of change, we subtract the total amount the customer has from the final amount to be paid: $63.60 - $70 = -$6.40.
Since the result is negative, it means the customer does not have enough money to pay for the jeans, and there is no change to be given. Therefore, none of the options presented are correct.
Correct answer: None of the above options.
To determine the correct amount of change the customer should receive, we need to calculate the total cost of the jeans and subtract it from the total amount of money the customer has (including the gift certificate and the cash in their wallet).
First, let's calculate the total cost of the two pairs of jeans:
2 pairs of jeans * $30 per pair = $60
Next, let's calculate the amount of sales tax:
$60 * 6% = $3.60
Now, let's calculate the total amount of money the customer has:
Gift certificate: $50
Cash in the wallet: $20
Total amount of money: $50 + $20 = $70
To find the change, we subtract the total cost of the jeans plus the tax from the total amount of money the customer has:
$70 - ($60 + $3.60) = $70 - $63.60 = $6.40
Now, let's examine the answer choices:
A. One $5 bill, one $1 bill, 1 quarter, and 1 dime:
This does not add up to $6.40. So, A is incorrect.
B. One $10 bill, three $1 bills, 2 quarters, and 1 dime:
The total value of this combination is greater than $6.40. So, B is incorrect.
C. One $5 bill, one $1 bill, and 4 dimes:
The total value of this combination is less than $6.40. So, C is incorrect.
D. Two $5 bills:
The total value of two $5 bills is $10, which is greater than $6.40. So, D is incorrect.
Therefore, none of the answer choices are correct.
Based on the calculations, the customer should receive $6.40 in change.