Math Problem Statement
Two cyclists, 96 miles apart, start riding toward each other at the same time. One cycles 3 times as fast as the other. If they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?
Solution
Let's define the variables and set up the equations to solve the problem.
Let the speed of the slower cyclist be miles per hour (mi/h). Since one cyclist is cycling three times as fast as the other, the speed of the faster cyclist will be mi/h.
The cyclists are moving towards each other, so their combined speed is the sum of their individual speeds, i.e., mi/h.
They meet after 4 hours, and during this time they cover a distance of 96 miles (the distance between them). Therefore, the total distance covered is:
Simplifying this equation:
Solving for :
Thus, the speed of the slower cyclist is 6 mi/h. Since the faster cyclist is 3 times as fast, the speed of the faster cyclist is:
Therefore, the speed of the faster cyclist is 18 mi/h.
Would you like more details on any part of this solution?
Here are 5 related questions you might find interesting:
- If the slower cyclist's speed was 8 mi/h, how much time would it take for them to meet?
- What would happen if the distance between the cyclists was doubled?
- If they met after 6 hours instead of 4, what would be the speed of the faster cyclist?
- How much distance would the slower cyclist cover before they meet?
- What if the faster cyclist's speed was halved—how long would it take to meet?
Tip: When solving problems with relative motion, combining the speeds of both objects moving towards each other simplifies calculations!
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Math Problem Analysis
Mathematical Concepts
Algebra
Relative Motion
Linear Equations
Formulas
Distance = Speed × Time
Combined Speed of Cyclists = Speed of Slower Cyclist + Speed of Faster Cyclist
Theorems
Basic Proportionality in Relative Motion
Suitable Grade Level
Grades 6-8
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