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Welcome to MATH Magazine’s Numbers in the News! Each week we'll post a math question based on a current news story. Read and solve the question.

If you like, enter your answer in the Comments section. The first person to answer the question correctly has the honor of being our “Winner of the Week.” (We’ll reveal that person, and the correct answer, in that question’s Comments the following week.)

What are you waiting for? Start solving!


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Following Up With Japan

Last week, we wrote about the earthquake and tsunami in Japan. That disaster also led to a nuclear crisis for that country. Japan uses nuclear power, an alternative to fossil fuels like coal, to generate some of the country's electricity. Nuclear power plants create energy using a chemical reaction that produces large amounts of heat. The reactors have long, thin fuel rods that must be kept cool to prevent overheating. Overheating can cause radiation, which can be dangerous if people are exposed to it.

This was a major concern when the Fukushima Daiichi nuclear power plant was badly damaged by the earthquake and tsunami. Authorities have been working to cool the fuel rods by spraying water. An estimated 1,170 tons of water were sprayed between 9 p.m. Sunday and 4 a.m. Monday. About how many tons of water is that per hour? Round to the nearest hundredth.

There were about 167.14 tons of water sprayed between 9:00 p.m Sunday and 4:00 a.m. Monday.

Congrats to Leeann L., our winner of the week for the second time!

The caption contest for this photo is closed.