ࡱ> %'${ Tbjbj 46rrTLh," +"-"-"-"-"-"-"$j$'Q"Q"f"[[[.+"[+"[[:K!,!@GAZw! "|"0"!R''!'!D[Q"Q"~"' : Ratios, Rates and Proportions - Review Name____________________ Date___________Section____ 1) Write a ratio in simplest form that represents the number of and symbols to the total number of figures? & & & & % % % % @ @ @ @ @ @ @ @ @ @ 2) Determine if each pair of ratios forms a proportion. Show your work.  EMBED Equation.3  and  EMBED Equation.3   EMBED Equation.3  and  EMBED Equation.3   EMBED Equation.3  and  EMBED Equation.3  3) A local restaurant purchased 45 pounds of flour at a total cost of $38.25. Determine the unit cost per pound. Write each ratio as a fraction in simplest form. 4) 48 : 76 5) 20 inches to 4 feet Find each unit rate. Round your answer to the nearest hundredth if necessary. 6)_______________ 640 miles in 25 hours 7)_______________ $30.50 for 32 ounces of specialty cooking oil Solve for the missing number in each proportion. 8)  EMBED Equation.3  =  EMBED Equation.3  9)  EMBED Equation.3  =  EMBED Equation.3  10)  EMBED Equation.3  EMBED Equation.3  =  EMBED Equation.3  11)  EMBED Equation.3  =  EMBED Equation.3  #s 12- 15 Solve each of the following. Show your work. 12) Use a proportion to determine whether or not the two items below contain an equal proportion of fat. Steak: A 20 ounce steak contains 6 ounces of fat. Hamburger: A 6 ounce hamburger contains 0.75 ounces of fat. 13) A 12 ounce can of Coke costs $0.50 when purchased from the soda machine at the school. An 18 ounce bottle of Pepsi from the soda machine at the local gas station costs $1.25. Find the unit cost of each to determine which location has the less expensive soda per ounce? 14) The ratio of boys to girls at the dance was 9 to 5. How many girls were at the dance if there were 85 girls at the dance? 15) The ratio of teachers to students in a school is 2 to 45. How many teachers are in the school if there is a total of 1410 students and teachers altogether in the school? 16) Constructed Response Seven notebooks at the school supply store cost $4.76. Step A What is the unit rate? _____________ Step B Explain how you determined your answer to Step A. Use words, numbers, and/or symbols in your explanation. How much would it cost to purchase 3 of these notebooks? _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________ 17) Constructed Response A machine can make 28 items in an 8 minute time period. Step A How many items could this machine make in a 14 minute time period? ___________ Step B Use what you know about proportions to explain how you determined your answer to Step A. Use words, numbers, and or symbols in your explanation. How many items could this machine make in a three hour time period? ________________________________________________________________________________________________________________________________________________________________________________________________________________________ Selected Response 18)______Which ratio is equivalent to 48:72? A) 3:4 B) 2:3 C) 8:10 D) 7:9 19)______Which ratio is equivalent to  EMBED Equation.3 ? A)  EMBED Equation.3  B)  EMBED Equation.3  C)  EMBED Equation.3  D)  EMBED Equation.3  20)______Which ratio is equivalent to  EMBED Equation.3 ? A)  EMBED Equation.3  B)  EMBED Equation.3  C)  EMBED Equation.3  D)  EMBED Equation.3  21)______Which ratio is equivalent to  EMBED Equation.3 ? 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