Which of the following ya real word problem that could be solved by calculating the sum 18+(-5)?
One possible real-world problem that could be solved by calculating the sum 18 + (-5) is as follows:
Sarah had $18 in her wallet. She went to a store and bought a book that cost $5. How much money does Sarah have left in her wallet?
The problem that can be solved by calculating the sum 18+(-5) is finding the result of removing 5 units from a total of 18 units.
To determine if the problem can be solved by calculating the sum 18 + (-5), we need to check if it represents a real-world situation. The problem can be solved if it corresponds to a scenario where we are combining or adding two quantities. Let's analyze the options:
Option A: "John has 18 apples, and he gave 5 to his friend."
This problem can be solved by calculating the sum 18 + (-5) since it involves adding the quantity John had (18) with the amount he gave away (-5). So, option A is a real-word problem that can be solved using 18 + (-5).
Option B: "The temperature dropped from 18 degrees to -5 degrees."
Although the problem mentions temperature, it asks for the decrease between two values (18 and -5) rather than the sum. Therefore, option B does not require calculating 18 + (-5) to find the solution.
Option C: "A car traveled 18 miles forward and then backed up 5 miles."
Similarly to option A, this problem involves adding the distance traveled forward (18) and the distance traveled backwards (-5). Hence, option C is a real-world problem that can be solved by calculating 18 + (-5).
In conclusion, the real-world problems that can be solved by calculating the sum 18 + (-5) are option A ("John has 18 apples, and he gave 5 to his friend") and option C ("A car traveled 18 miles forward and then backed up 5 miles").