At 1019, on 10 March, you pass under the Greenville Bridge (mile 531.3 AHP). What was your average speed since departing River Cement Co. Dock?
• Average speed calculation using distance and time • Converting hours and minutes to decimal hours • Reading departure and arrival information from the chart/route diagram for River Cement Co. Dock to Greenville Bridge (mile 531.3 AHP)
• How much river mileage did you cover between River Cement Co. Dock and Greenville Bridge (mile 531.3 AHP)? • Exactly how much time (in hours and minutes) passed between your departure time and 1019 on 10 March? • Once you convert the elapsed time to decimal hours, what value do you get when you divide distance by time, and which answer choice is closest?
• Verify the distance in miles between River Cement Co. Dock and mile 531.3 AHP from the exam chart or table. • Convert the elapsed time into decimal hours before dividing (for example, 19 minutes is not 0.19 hours). • Check that your final speed is in miles per hour (mph) and then compare it carefully with the answer choices.
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