A real word problem using 5x = 20
Jack bought 5 toy cars for $20 each. If he bought the same number of toy cars of the same price for each day of the week, how much money did he spend in total?
Solve that
To solve the equation 5x = 20, where x represents the number of toy cars, we divide both sides of the equation by 5:
5x/5 = 20/5
x = 4
Therefore, Jack bought 4 toy cars.
To find out how much money he spent in total, we multiply the number of toy cars (4) by the price of each car ($20):
4 * $20 = $80
Therefore, Jack spent a total of $80.
A real world problem using x + 6 = 15
Maria has $15 in her wallet. She wants to buy a new book that costs $6. How much money did Maria have initially before buying the book?
To solve the equation x + 6 = 15, we need to isolate x by subtracting 6 from both sides of the equation:
x + 6 - 6 = 15 - 6
x = 9
Therefore, Maria initially had $9 in her wallet before buying the book.
Sure! Let's consider the real-world problem of Sarah earning money from her part-time job.
The equation 5x = 20 is an algebraic representation of the problem. In this equation, "x" represents the number of hours Sarah worked, and "5x" represents the amount of money she earned by working those hours. The equation states that the amount she earned is equal to $20.
To find the value of "x" and determine how many hours Sarah worked, we can solve the equation.
Step 1: Start with the equation 5x = 20.
Step 2: To isolate "x" on one side of the equation, we need to divide both sides of the equation by 5. This step cancels out the multiplication of "x" by 5.
5x/5 = 20/5
x = 4
So, the solution to the equation 5x = 20 is x = 4. This means Sarah worked for 4 hours, and she earned $20 for her part-time job.