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Real-Life Math

John Mackie was a marine navigator in the coast guard. He says that math is extremely important since many navigation problems require the use of university-level calculus and spherical trigonometry.

He says you can get by with some basic math skills if you are an entry-level navigator. But if you want to advance, you better be comfortable with numbers. "When you get into deep-sea navigation, it is basically 90 percent math. That is where your math skills need to show."

You are a marine navigator. You just started your midnight watch. The captain orders you to plot a course for a small inlet some 156 nautical miles away where you are supposed to meet a supply ship. And the captain wants to meet with the other ship at exactly 8 a.m.

Calculate the necessary speed to get there in time. Your ship can reach a maximum speed of 24 knots (or nautical miles) an hour.

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