Math Problem Statement

Sono Road runs from South to North and Ewest Road runs from East to West intersecting at point X. Jeb and Jill are at point P on Sono Road 30 meters from point X. Jeb walks along Sono Road to point X then turns east and walks 20 meters to point Q on Ewest Road. Jill walks on a path linking point P to point Q. Find the difference in distance between the two routes.

Solution

Problem Breakdown:

We are tasked with finding the difference in distance between two routes:

  1. Jeb's Route:

    • Jeb walks along Sono Road from PP to XX, a distance of 30 meters.
    • Then, he turns east and walks 20 meters along Ewest Road from XX to QQ.
    • Total distance = 30+20=5030 + 20 = 50 meters.
  2. Jill's Route:

    • Jill walks on the straight diagonal path from PP to QQ.

We need to calculate Jill's distance and subtract it from Jeb's total distance to find the difference.


Solution:

Using the Pythagorean Theorem, the straight-line distance Jill travels (PQPQ) is calculated as follows:

PQ=(PX)2+(XQ)2PQ = \sqrt{(PX)^2 + (XQ)^2}

Where:

  • PX=30PX = 30 meters (vertical distance along Sono Road).
  • XQ=20XQ = 20 meters (horizontal distance along Ewest Road).

Substitute the values:

PQ=302+202PQ = \sqrt{30^2 + 20^2}

PQ=900+400=1300=101336.06metersPQ = \sqrt{900 + 400} = \sqrt{1300} = 10\sqrt{13} \approx 36.06 \, \text{meters}


Difference in Distance:

Jeb's distance = 50meters50 \, \text{meters}
Jill's distance = 36.06meters36.06 \, \text{meters}

Difference: 5036.06=13.94meters50 - 36.06 = 13.94 \, \text{meters}


Final Answer:

The difference in distance between the two routes is approximately:

13.94meters\boxed{13.94 \, \text{meters}}


Would you like me to explain further or explore related topics? Here are some related questions you might find useful:

  1. How does the Pythagorean theorem work in other coordinate systems?
  2. What is the significance of straight-line distances in optimization problems?
  3. Could Jill's path be calculated using other mathematical techniques, like vectors?
  4. How is the Pythagorean theorem used in real-world applications, like navigation or construction?
  5. What would the difference be if Jeb walked a different route, e.g., along a curved path?

Tip: For similar problems involving distances, always visualize the situation geometrically, and check if straight-line distances can be solved with the Pythagorean theorem!

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Math Problem Analysis

Mathematical Concepts

Geometry
Pythagoras' Theorem
Distance Calculation

Formulas

Distance using Pythagoras' theorem: c = √(a² + b²)

Theorems

Pythagoras' Theorem

Suitable Grade Level

Grades 6-9