The mass of a freight train is 9.98x10^6 kilograms. The mass of an aircraft carrier is 7.3x10^7 kilograms. Aprroximately how many more kilograms is the mass of an aircraft carrier than the mass of a freight train? Show your work and write it in scientific notation. (10 points)

Solution would be 30. By dividing 100 by 25 you realize that for every pound of ground beef you get 1 hamburger, in other words, 1/4 the number of burgers is the amount of ground beef. So what's 1/4 of 120 the answer should be 30. 

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