Example 7.56 from Prealgebra, 7.5 Systems of Measurement

Systems of Measurement: example 7.56

Soleil lives in Minnesota but often travels in Canada for work. While driving on a Canadian highway, she passes a sign that says the next rest stop is in $100$ kilometers. How many miles until the next rest stop? Round your answer to the nearest mile.

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

The height of Mount Kilimanjaro is $5,895$ meters. Convert the height to feet. Round to the nearest foot.

How did it go?

	100 kilometers
Multiply by a unit conversion factor relating kilometers and miles.	$100 kilometers \cdot \frac{1 mile}{1.61 kilometers}$ $100 \cdot \frac{1 mi}{1.61 km}$
Simplify.	$\frac{100 mi}{1.61}$
Divide.	62 mi
	It is about 62 miles to the next rest stop.

	100 kilometers
Multiply by a unit conversion factor relating kilometers and miles.	$100 kilometers \cdot \frac{1 mile}{1.61 kilometers}$ $100 \cdot \frac{1 mi}{1.61 km}$
Simplify.	$\frac{100 mi}{1.61}$
Divide.	62 mi
	It is about 62 miles to the next rest stop.

Systems of Measurement: example 7.56

Solution

Your turn

Systems of Measurement: example 7.56

Solution

Your turn