Step 1: 
Use the conversion factor: 

1 mile = 1.60934 kilometers. 
 

Step 2:

Multiply 75 miles per hour by 1.60934 to convert to kilometers per hour: 
\(75 \space \text { miles/hour} \times 1.60934 \space \text { km/mile} \approx 120.7005 \space \text { km/hour} \) 
 

Step 3:

Round to one decimal place: 
\(120.7 \space \text { km/hour} \)

 
Step 4:

Therefore, 75 miles per hour is approximately 120.7 kilometers per hour.

Supplemental Knowledge:

Converting speed from miles per hour (mph) to kilometers per hour (km/h) involves using the conversion factor between these two units of distance. The conversion factor is:
\(1\text {  mile} ≈1.60934\text {  kilometers} \)

To convert miles per hour to kilometers per hour, you multiply the speed in miles per hour by this conversion factor.

Theory in Practice:

Understanding speed conversions is especially essential when traveling internationally, such as driving in countries using kilometers per hour instead of miles per hour. Knowing how to convert between units ensures safe driving as well as helps compare vehicle performance metrics or understand different fuel efficiency ratings provided.

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