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Assignment14 - NAME UFID Suggested Exercises 14 Lecture 16...

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NAME: _____________________________ UFID - ___ ___ ___ ___ - ___ ___ ___ ___ Suggested Exercises 14 – Page 1 of 8 Suggested Exercises 14 – Lecture 16 When turning in this assignment, this sheet must be stapled to the front with all ORGANIZED scratch work behind it. Please write your final answers on this sheet in the answer block provided and circle your final answers on your scratch work copy. Scratch work should be appropriately spaced apart and numbered. In the following exercises, fill in the blank to make the statement about percentage increase or decrease correct. Round your decimal answers at the 2 nd digit past the decimal point so that the final percentage answer is rounded to the closest whole %. Complete scratch work on scratch paper. Example: The gestation period of humans (266 days) is__ 22 % percent longer than the gestation of grizzly bears (220 days). barb2right Scratch: It says “…than ... bears” so we’re comparing Humans to Bears and the Bears gestation is our Reference Value. Human gestation is our “New” Value. Absolute Change: 266 −220 =46 , Relative Change: g2872g2874 g2870g2870g2868 =0.20 909…(Round at the underlined digit)≈22% 1. The 2009 life expectancy in Canada (81.2 years) is ___________ percent greater than the 2009 life expectancy in Russia (65.9 years). 2. The main span of the Tacoma Narrows bridge (2800 feet) is ___________ percent shorter than the main span of the Golden Gate bridge (4200 feet). 3. The median age at first marriage of U.S. Women (25.9 years) is ___________ percent less than the median age at first marriage of U.S. Men (27.5 years). 4. The number of deaths due to poisoning in the United States in a year (25,500) is ___________ percent greater than the number of deaths due to falls (21,400). In the following exercises, fill in the blank so that the statement affectively converts “% of” to “% more/less”. See Lecture 14, page 2 for the formula reference. Example: Will is 22% taller than Wanda, so Will’s height is 122% of Wanda’s height. barb2right Scratch: Will is 22% more so from the formula his height is (100+22)% of Wanda’s. 5. The area of Norway is 24% more than the area of Colorado, so Norway’s are is ___________ % of Colorado’s area. 6. The wholesale price of a TV is 40% less than the retail price. Therefore, the wholesale prices is ___________ times the retail price. 7. The net worth of Zelda is 6.4 % less than the net worth of Alicia, so Zelda’s net worth is ___________ % of Alicia’s net worth. 8. A store is having a 50% off sale. Therefore, the original price of an item is ___________ time as much as the sale price.
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NAME: _____________________________ UFID - ___ ___ ___ ___ - ___ ___ ___ ___ Suggested Exercises 14 – Page 2 of 8 Describe each of the following changes in two ways: as an absolute change in terms of percentage points and as a relative change in terms of a percentage. Record answers on this sheet, include scratch work on scratch paper. You may use a calculator for the calculations. Your scratch should still show the fraction reducing. Round decimal answers on the 2 nd digit to the right of the decimal point so that percentages round to whole numbers.
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