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Percent
Complete.
 1 Let's say you have a molecule that is made entirely out of four different kinds of subunits called As, Ts, Cs, and Gs. In this molecule, the number of Cs equals the number of Gs and the number of Ts equals the number of As. If one of these molecules is analyzed and found to consist of 40% As, then what percent of the molecule is made up of Gs?
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Complete.
 1 If seven out of fifteen skinks have stripes and the rest don't, what percent of the skinks do not have stripes out of a population of 125 skinks? Round your answer to the nearest tenth of a percent.
 2 The number of coyotes in the area around Big Town has changed over the years. During the previous survey, which was done two years ago, there were estimated to be 572 coyotes. The most recent survey indicates the coyote population has increased by 6%. If this is true, what is a good estimate for the number of coyotes presently around Big Town?

Complete.
 1 In Bigtown Creek the flow of sediment is slowly decreasing as more and more of the drainage area around the creek is developed and covered by concrete. Ten years ago a measurement was made by the local university and an average mass of about 24 grams of sediment per hour was moving down the creek. Now the average sediment flow is only about 37% of that. What is the current mass sediment flow? Round your answer to the nearest tenth.
 2 Z-Globe sent a submarine to the bottom of the Pacific Ocean off the coast of California. Its mission was to collect some rocks for radiometric dating. It was in a fairly shallow place and the water was only 283 m deep. It was well within the submarine's safe operating depth. In fact the submarine was capable of diving to a depth of 1,800 m. At what percent of the safe operating depth was the sub operating during its mission off the coast of California? Round your answer to the nearest tenth of a percent.

 Key #2
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Complete.
 1 Courtney used a pole to push a boat along the canal in megalopolis. She applied a force of 60 N and accelerated the boat at 0.34 m/s2. Later she was on another boat and the same pushing force resulted in an acceleration of 0.28 m/s2. The mass of the second boat was what percent the mass of the first boat? Round your answer to the nearest hundredth of a percent.
 2 Mr. Bloop drives 17 kilometers at an average speed of 53 km/hr. Mrs. Bloop drives the same distance at an average speed that is 3% faster than Mr. Bloop's. How long does it take her to travel the 17 km distance? Round your answer to the nearest hundredth of a minute.

Complete.
 1 A cold saturated solution of magnesium ferrocyanide contains 33 grams of the salt per 100 ml. If you have a solution that contains 30 g of magnesium ferrocyanide per 200 ml, how close is it to being saturated? Express your answer as a percent rounded to the nearest whole number.
 2 What is the concentration (in %) of a solution of 650 ml of water that has 8 grams of barium chloride dissolved in it? Round your answer to the nearest hundredth of a percent if needed.

Complete.
 1 Mr. Bloop was practicing his swing at the driving range last week. He paid \$14 to hit 50 balls. Each ball hit cost what percent of the total price he paid?
 2 Brianna enjoys playing disk golf. She has really improved in recent months, and she got her lowest score ever today. She scored a 40 on a nine-hole course. She remembered last year when she played the same course for the first time and scored a 48. By what percent did her score decrease this last time compared to the time she scored a 48? Round your answer to the nearest tenth of a percent.