If gas prices are now $3.75 and they were up 10% from 6 months ago, how much were gas prices 6 months ago?
1.1x = 3.75
To find out the gas prices 6 months ago, you need to calculate the initial price before the 10% increase. Here's how:
1. Let X be the gas prices 6 months ago.
2. The 10% increase can be calculated as 10% of X, or 0.10 * X.
3. The final price after the increase is X + 0.10 * X, which equals $3.75.
4. Simplify the equation: X + 0.10X = $3.75.
5. Combine like terms: 1.10X = $3.75.
6. Solve for X: X = $3.75 / 1.10.
7. Calculate the value: X ≈ $3.41.
Therefore, gas prices were approximately $3.41 six months ago.
To find out how much gas prices were 6 months ago, we need to first calculate the 10% increase from the current price.
Step 1: Calculate the amount of the 10% increase.
10% of $3.75 = ($3.75 * 10) / 100 = $0.375
Step 2: Subtract the 10% increase from the current price to find the previous price.
Previous price = current price - 10% increase
Previous price = $3.75 - $0.375 = $3.375
Therefore, gas prices were $3.375 six months ago.