Explanation:
Real-Life Situation: A Bank Account Balance
A real-life situation where negative numbers are used is tracking a bank account balance. When you spend more money than you have in your account, the balance becomes negative, indicating that you owe money to the bank.
Word Problem:
Sophia had $500 in her savings account. During the month, she made three transactions. First, she withdrew $200 to pay for her monthly bills. Then, she deposited $100 from her part-time job. Finally, she made a purchase of $400 using her debit card.
What is the final balance in Sophia's savings account after these transactions?
Solution:
Step 1: Withdrawal of $200 (negative)
$500 - $200 = $300
Step 2: Deposit of $100
$300 + $100 = $400
Step 3: Purchase of $400 (negative)
$400 - $400 = $0
The final balance in Sophia's savings account is $0 after these transactions.