The following word problem is for practicing
the application of calculations.
Example 1:
An American motorist is taking a road trip through Canada. The
motorist finds that the speed limit is 40 kilometers per hour, but
his speedometer is given in units of miles per hour. What speed
should the motorist drive in miles per hour?
To solve this problem, convert miles per
hour to kilometers per hour by using the conversion that gives
miles in terms of kilometers. Divide the number of kilometers
by the conversion factor to get the miles per hour.
Conversion factor: kilometers ÷ 1.609 = miles
40 ÷ 1.609 = miles/hour
40 ÷ 1.609 = 24.8
The motorist should be driving approximately 25 miles per
hour.
