You are loading 465,000 barrels of cargo oil. At 0900 you find that you have loaded 207,000 barrels. At 1030 you find that you have loaded 223,000 barrels. If you continue loading at the same rate, you will finish at approximately __________.
• How to compute a loading rate in barrels per hour from two time/quantity readings • Using the rate to find time remaining to load the total amount • Converting fractional hours into hours and minutes to compare with clock time
• First, between 0900 and 1030, how many minutes have passed, and how many barrels were loaded during that interval? Use that to find barrels per hour. • Next, figure out how many barrels are still left to load after 1030, then use the loading rate to find how many hours it will take to finish. • Finally, add that number of hours (and minutes) to 1030 and see which choice is closest to the resulting clock time.
• Be sure your time difference between 0900 and 1030 is in hours (or decimal hours) before computing the rate. • Double-check the remaining volume: total barrels minus barrels already loaded at 1030. • When you add the loading time to 1030, carefully convert any decimal of an hour into minutes (e.g., 0.25 hr = 15 min).
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