Question

On Friday, Diego's checking account balance was $512.40. On Saturday, he deposited
$150.25 and made a withdrawal of $62.80. On Sunday, he transferred 30% of the
money in his checking account to his savings account. How much money is left in
Diego's checking account after the transfer?
A. $419.90 B. $453.73 C. $458.28 D. $477.58

Answer 1

Let's calculate the amount in Diego's checking account step by step.

1. **Starting balance on Friday**:
\[
\text{Starting balance} = 512.40
\]

2. **Deposit on Saturday**:
\[
\text{New balance after deposit} = 512.40 + 150.25 = 662.65
\]

3. **Withdrawal on Saturday**:
\[
\text{New balance after withdrawal} = 662.65 - 62.80 = 599.85
\]

4. **Transfer 30% of the current balance to savings on Sunday**:
- Calculate 30% of the checking account balance:
\[
\text{Transfer amount} = 0.30 \times 599.85 = 179.955
\]

- Since we typically round to two decimal places for currency:
\[
\text{Transfer amount} \approx 179.96
\]

5. **Calculate the remaining balance after the transfer**:
\[
\text{Remaining balance} = 599.85 - 179.96 = 419.89
\]

Thus, the amount left in Diego's checking account after the transfer is approximately **$419.89**. However, looking at the provided options:
- A. $419.90
- B. $453.73
- C. $458.28
- D. $477.58

The closest correct answer based on slight adjustment in rounding would be **A. $419.90**.