Math Problem Statement

Suppose you are driving. You notice that after driving for 6 hours, you are 465 miles from Seattle. You continue driving, and calculate that after driving 9 hours you are 690 miles from Seattle. how far do you drive every 5 hours

Solution

To solve this problem, we first need to determine your driving speed, which is constant. We can use the information provided about the distances and times to calculate the speed and then find out how far you drive in a different time frame (5 hours).

Step 1: Find the speed

We have two points in time with distances from Seattle:

  • After 6 hours, you are 465 miles from Seattle.
  • After 9 hours, you are 690 miles from Seattle.

The change in distance over the change in time will give us the speed: Speed=Change in distanceChange in time\text{Speed} = \frac{\text{Change in distance}}{\text{Change in time}}

The change in distance is 690465=225690 - 465 = 225 miles, and the change in time is 96=39 - 6 = 3 hours. So the speed is: Speed=225 miles3 hours=75 miles per hour\text{Speed} = \frac{225 \text{ miles}}{3 \text{ hours}} = 75 \text{ miles per hour}

Step 2: Find the distance driven in 5 hours

Now that we know your speed is 75 miles per hour, we can calculate how far you drive in 5 hours using the formula: Distance=Speed×Time\text{Distance} = \text{Speed} \times \text{Time} Substitute the values: Distance=75 miles/hour×5 hours=375 miles\text{Distance} = 75 \text{ miles/hour} \times 5 \text{ hours} = 375 \text{ miles}

Final Answer

You drive 375 miles every 5 hours.

Would you like to see more details or have any questions?

Here are 5 related questions:

  1. What would be your total distance after driving for 10 hours?
  2. How would the distance change if your speed increased by 10 miles per hour?
  3. If you started at a different distance from Seattle, how would that affect your travel time?
  4. How can you calculate the time taken to reach a specific distance?
  5. What is the formula for distance if the speed varies over time?

Tip: When dealing with problems involving constant speed, always use the formula Distance=Speed×Time\text{Distance} = \text{Speed} \times \text{Time} to find unknown values.

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Math Problem Analysis

Mathematical Concepts

Algebra
Rate of Change
Linear Relationships

Formulas

Speed = Change in Distance / Change in Time
Distance = Speed × Time

Theorems

Constant Speed Theorem

Suitable Grade Level

Grades 6-8