To find the ratio of 80 seconds to 2 hours, we need to express both in the same unit of time, so let's convert 2 hours into seconds.

1. **Convert 2 hours to seconds:**
   \[
   2 \, \text{hours} = 2 \times 60 \, \text{minutes/hour} \times 60 \, \text{seconds/minute} = 7200 \, \text{seconds}
   \]

2. **Set up the ratio of 80 seconds to 7200 seconds:**
   \[
   \text{Ratio} = \frac{80}{7200}
   \]

3. **Simplify the fraction by dividing both the numerator and the denominator by 80:**
   \[
   \frac{80 \div 80}{7200 \div 80} = \frac{1}{90}
   \]

Thus, the ratio of 80 seconds to 2 hours is **1:90**.

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Here are some related questions:

1. What is the ratio of 45 seconds to 1 hour?
2. How would you find the ratio of 3 minutes to 1.5 hours?
3. What is the simplified ratio of 100 seconds to 5 hours?
4. How can we express a ratio of 1 hour to 1 day?
5. What is the equivalent ratio of 2 minutes to 120 seconds?

**Tip:** When working with ratios involving time, always convert to the same unit before simplifying.

Explore how to find the ratio of 80 seconds to 2 hours by converting time units and simplifying. This solution includes step-by-step guidance on converting hours to seconds and reducing ratios, suitable for students in Grades 5-7.

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