Mrs. Bond made a deposit of $100 into her checking account. Then she wrote checks for $97.54 and $48.27. If her previous balance was $320.39, what is her new balance?

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Mika bought two copies of the same book and a tape priced at $11.95. She gave the cashier $60 and received $4.27 in change. How much did each book cost?

320.39 + 100 - 97.54 - 48.27 = ?

60 - (2b + 11.95) = 4.27

To find Mrs. Bond's new balance, we need to subtract the amount of the checks from her previous balance and then add the deposit. Let's break it down step-by-step:

1. Start with Mrs. Bond's previous balance: $320.39
2. Subtract the amount of the first check: $320.39 - $97.54 = $222.85
3. Subtract the amount of the second check: $222.85 - $48.27 = $174.58
4. Add the deposit: $174.58 + $100 = $274.58

Therefore, Mrs. Bond's new balance is $274.58.

Now, let's move on to the second problem:

To find the cost of each book, we need to subtract the price of the tape from the total amount paid and then divide by 2, as there are two books. Here are the steps:

1. Start with the total amount Mika paid: $60
2. Subtract the amount of change she received: $60 - $4.27 = $55.73
3. Subtract the price of the tape: $55.73 - $11.95 = $43.78
4. Divide the remaining amount by 2 to find the cost of each book: $43.78 / 2 = $21.89

Therefore, each book costs $21.89.