When the legal speed limit for the New York 'Ihruway was...

When the legal speed limit for the New York 'Ihruway was increased from 55 mih to 65 mih. how much time was saved by a motorist who drove the $700 \mathrm{~km}$ between the Buffalo entrance and the New York City exit at the legal speed limit?

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Key Concepts

Rate and Time Relationship

This concept involves using the fundamental equation that relates speed, distance, and time. It explains that time is determined by dividing the distance traveled by the speed at which one is moving. Understanding this relationship is crucial for calculating how changes in speed affect travel time over a given distance.

Unit Conversion

In problems involving measurements, it is often necessary to convert units appropriately to ensure consistency. When speeds are given in one system (e.g., miles per hour) and distances in another (e.g., kilometers), converting one of the units to match the other is essential for accurate calculations. This step is critical in solving real-world applications where different measurement systems may be used.

Time Savings Calculation

This concept focuses on determining the difference in travel times that result from changes in speed. By calculating and comparing the time required to travel the same distance at two different speeds, one can assess how much time is saved or lost. This method is particularly useful in scenarios where legal speed limits or other regulatory factors change, impacting overall travel duration.

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