1 ton of copper decreased by 20% in 2015 this decrease was $1320. What will the price of 1 ton of copper be now?

To solve this, let's break the problem down step by step:

### Step 1: Set up an equation to express the price of copper before the decrease.
Let $ P $ represent the price of 1 ton of copper before the 20% decrease.

The problem tells us that a 20% decrease in the price was $1320.

This can be written as:

\[
0.20 \times P = 1320
\]

### Step 2: Solve for $ P $ (the price before the decrease).

\[
P = \frac{1320}{0.20} = 6600
\]

So, the price of 1 ton of copper before the decrease was $6600.

### Step 3: Find the current price after the decrease.
Since the price decreased by 20%, the current price is 80% of the original price.

\[
\text{Current price} = 0.80 \times 6600 = 5280
\]

### Final Answer:
The price of 1 ton of copper now is $5280.

Would you like more details on any step? Here are 5 related questions for further exploration:

1. How would the price change if the decrease was 30% instead of 20%?
2. If the price increased by 20% instead of decreasing, what would the price be now?
3. How would you calculate the price if both a decrease and increase were applied consecutively?
4. What is the percentage decrease if the price dropped from $6600 to $5000?
5. How would a 10% yearly inflation affect the price over 5 years?

**Tip:** When calculating percentage changes, always check if you're working with the increase or decrease of the original value.

Discover how to calculate the current price of 1 ton of copper after a 20% decrease from $6600, resulting in a $1320 drop. This detailed guide explores percentage decrease concepts and basic algebra. Suitable for students in Grades 6-8.

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