On her last credit card bill, Linda paid a variable rate of 1.8 percent on the first $200 and 1.2 percent on any amount over $200. How much did she pay if her unpaid balance was $256?

0.018 * 200 = 3.60

0.012 * 56 = 0.67

To calculate how much Linda paid on her credit card bill, we need to determine the interest on her unpaid balance and then add it to the unpaid balance.

First, let's calculate the interest on the first $200.
Interest on the first $200 = 1.8% of $200

1.8/100 * 200 = $3.60

Next, let's calculate the interest on the remaining amount above $200, which is $56 in this case.
Interest on the remaining amount = 1.2% of $56
1.2/100 * 56 = $0.672

Now, we can find the total interest by summing up the interest on the first $200 and the interest on the remaining amount.
Total interest = Interest on the first $200 + Interest on the remaining amount
Total interest = $3.60 + $0.672

Total interest = $4.272

Finally, we can calculate the total amount Linda paid by adding the total interest to her unpaid balance.
Total amount paid = Unpaid balance + Total interest
Total amount paid = $256 + $4.272

Total amount paid = $260.272

Therefore, Linda paid $260.272 on her credit card bill.

To calculate the total amount Linda paid on her credit card bill, we need to determine the interest on the first $200 and the interest on any amount over $200.

Step 1: Calculate the interest on the first $200.
The interest on the first $200 can be calculated using the formula:
Interest = Principal × Rate

In this case, the principal is $200, and the rate is 1.8% or 0.018 (in decimal form).
So, the interest on the first $200 is:
Interest on first $200 = $200 × 0.018 = $3.60

Step 2: Calculate the interest on the remaining amount.
To find the interest on the remaining balance, we need to subtract $200 from the unpaid balance of $256.
Remaining balance = Unpaid balance - First $200
Remaining balance = $256 - $200 = $56

The interest on the remaining balance can be calculated using the formula:
Interest = Principal × Rate

In this case, the principal is $56, and the rate is 1.2% or 0.012 (in decimal form).
So, the interest on the remaining balance is:
Interest on remaining balance = $56 × 0.012 = $0.67

Step 3: Calculate the total amount Linda paid.
To find the total amount Linda paid, we need to add the interest on the first $200 and the interest on the remaining balance.
Total amount paid = Interest on first $200 + Interest on remaining balance
Total amount paid = $3.60 + $0.67 = $4.27

Therefore, Linda paid $4.27 on her credit card bill with an unpaid balance of $256.