Consumption of fast food by Mauritian teenagers from 1985 to 2015.

Problem Description:

The image provided is a line graph titled "Consumption of Fast Food by Mauritian Teenagers from 1985 to 2015." It shows the number of times per year that Mauritian teenagers consumed three types of fast food: Hamburgers, Pizza, and Fried Chicken. The task is to analyze the trends in consumption over the given period and explain the solution.

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Solution Explanation:

#### Step 1: Understand the Graph
- The x-axis represents the years from 1985 to 2015.
- The y-axis represents the number of times per year that teenagers consumed each type of fast food.
- There are three lines, each representing a different type of fast food:
- Blue line: Hamburgers
- Red line: Pizza
- Green line: Fried Chicken

#### Step 2: Analyze Each Trend

##### Hamburgers (Blue Line)
- In 1985, the consumption of hamburgers was relatively low, around 10 times per year.
- From 1985 to 2015, there is a consistent upward trend.
- By 2015, the consumption of hamburgers reached approximately 70 times per year.
- Conclusion: The consumption of hamburgers increased steadily over the 30-year period.

##### Pizza (Red Line)
- In 1985, the consumption of pizza was high, around 60 times per year.
- From 1985 to 2000, there is a steady decline.
- By 2000, the consumption of pizza dropped to around 40 times per year.
- From 2000 to 2015, the consumption of pizza continued to decline, reaching approximately 10 times per year in 2015.
- Conclusion: The consumption of pizza decreased significantly over the entire period.

##### Fried Chicken (Green Line)
- In 1985, the consumption of fried chicken was low, around 10 times per year.
- From 1985 to 2000, there is a gradual increase.
- By 2000, the consumption of fried chicken reached around 40 times per year.
- From 2000 to 2015, the consumption of fried chicken continued to rise, reaching approximately 60 times per year in 2015.
- Conclusion: The consumption of fried chicken increased steadily over the entire period.

#### Step 3: Compare the Trends
- Hamburgers showed a consistent and significant increase in consumption throughout the period.
- Pizza experienced a continuous decline in consumption.
- Fried Chicken also showed an increasing trend but started from a lower baseline compared to hamburgers.

#### Step 4: Identify Key Observations
1. Shift in Preference: There is a noticeable shift in preference from pizza to hamburgers and fried chicken over time.
2. Steady Growth: Both hamburgers and fried chicken saw steady growth in consumption, with hamburgers showing the most significant increase.
3. Decline in Pizza: Pizza consumption declined sharply, indicating a possible change in dietary habits or availability.

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Final Answer:

The consumption trends for Mauritian teenagers from 1985 to 2015 can be summarized as follows:
- Hamburgers: Steady increase from around 10 times per year in 1985 to approximately 70 times per year in 2015.
- Pizza: Significant decline from around 60 times per year in 1985 to approximately 10 times per year in 2015.
- Fried Chicken: Gradual increase from around 10 times per year in 1985 to approximately 60 times per year in 2015.

Boxed Final Answer:
\[
\boxed{\text{Hamburgers increased, Pizza decreased, and Fried Chicken increased over the period.}}
\]