An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (1)
Identify the original prices: Canvas $22.80, Frame $89.98.
Calculate the total original price: 22.80 + 89.98 = 112.78 .
Calculate the price increase: 0.05 × 112.78 = 5.639 .
Round to the nearest cent: The artist saves $5.64 .
Explanation
Identify Original Prices First, we need to identify the prices of the 24 by 36 inch canvas and frame before the price increase. According to the table, the canvas costs $22.80 and the frame costs $89.98.
Calculate Total Original Price Next, we calculate the total cost of the canvas and frame before the price increase:
Sum the Prices 22.80 + 89.98 = 112.78
Calculate Price Increase Now, we need to calculate the amount of the price increase, which is 5% of the total original price.
Multiply by Percentage Increase 0.05 × 112.78 = 5.639
Round to Nearest Cent Finally, we round the price increase to the nearest cent, which is $5.64. This is the amount the artist will save by buying the items before the price increase.
Examples
Understanding percentage increases and discounts is crucial in everyday financial decisions. For instance, when shopping for clothes, knowing how much you save with a 20% discount on a $50 item helps you manage your budget effectively. Similarly, calculating a 3% sales tax on a $100 purchase ensures you know the final cost. These skills are also valuable in understanding interest rates on loans or investments, enabling informed financial planning.
