What is your ETA at Driver Upper Light (mile...

🔍 Key Concepts

• Understanding how to convert distance run and speed made good into an estimated time of arrival (ETA) • Using the 24-hour clock and correct date change when a trip crosses midnight • Carefully tracking start time, elapsed time, and arrival time on river mile problems (AHP – Above Head of Passes)

💭 Think About

• From your last known time and position on the river, how many miles do you still have to go to reach mile 782.2 AHP? • At the speed given in the problem, how long (in hours and minutes) will it take to cover that remaining distance? Show that calculation. • When you add that elapsed time to your starting clock time, do you stay on the same day, or do you cross over to the next calendar day?

✅ Before You Answer

• Be sure you are using AHP miles correctly (are you going upriver or downriver, and are you subtracting/adding miles in the right direction?). • Double-check your time addition: convert fractions of an hour to minutes and correctly handle any carry over if minutes exceed 60. • Confirm that your final time format matches a 4-digit 24-hour time plus the correct calendar date (12 Sept).

What is your ETA at Driver Upper Light (mile 782.2 AHP)?

0136, 12 Sept

1336, 12 Sept

1052, 12 Sept

0828, 12 Sept