The price of oil decreased from $54 per barrel to $50 per barrel. What is the percent decrease in oil prices?

percent= 4/54 * 100

7.40 percent

What is the discount for the iPod in Exercise 2?

the answer is a 8% increase

To find the percent decrease in oil prices, we need to calculate the decrease in price in relation to the original price, and then express it as a percentage.

First, let's find the amount of decrease:
Original price = $54 per barrel
New price = $50 per barrel

Decrease = Original price - New price
Decrease = $54 - $50
Decrease = $4

Next, let's express the decrease as a percentage of the original price:
Percent Decrease = (Decrease / Original price) * 100

Percent Decrease = ($4 / $54) * 100
Percent Decrease ≈ 7.41% (rounded to two decimal places)

Therefore, the percent decrease in oil prices is approximately 7.41%.