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QuestionMathematics

Convert 140 km/h to mph.
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Answer

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Step 1:
I'll solve this conversion problem step by step, following the specified LaTeX formatting guidelines:

Step 2:
: Identify the Conversion Factors

- 1 kilometer = $$0.621371$$ miles
To convert kilometers per hour (km/h) to miles per hour (mph), we need to know the conversion factors: - 1 hour remains 1 hour

Step 3:
: Set Up the Conversion Calculation

140 \frac{\mathrm{km}}{\mathrm{h}} \times 0.621371 \frac{\mathrm{miles}}{\mathrm{km}}
We'll multiply the given speed by the miles-to-kilometers conversion factor:

Step 4:
: Perform the Multiplication

140 \times 0.621371 = 86.99194

Step 5:
: Round to a Reasonable Precision

86.99194 \approx 87
Rounding to the nearest whole number:

Final Answer

140 \frac{\mathrm{km}}{\mathrm{h}} = 87 \frac{\mathrm{miles}}{\mathrm{h}}