0 6 THE PERCENT PROPORTION 0 6 The

0 -6: THE PERCENT PROPORTION

0 -6: The Percent Proportion Percent: A ratio that compares numbers to 100. To write a percent as a fraction: Write the ratio with a denominator of 100 Simplify the fraction, if possible Examples 79% 107% 0. 5%

0 -6: The Percent Proportion Percent proportion: A ratio of part to a whole equal to a percentage. part whole Is/ = Percent/ Of 100 percentage Example 2 (find the part) 40% of 30 is what number? Fill in known information Cross-multiply 100 a = 1200 a = 12 Divide by 100

0 -6: The Percent Proportion Example 3 (find the percentage): Kelsey took a survey of students in her lunch period. 42 out of the 70 students surveyed said their family had a pet. What percent of the students had pets? Fill in known information Cross-multiply: 4200 = 70 p 70 p = 60 So 60% of the students had pets Divide by

0 -6: The Percent Proportion Example 4 (Find the whole) 67. 5 is 75% of what number? Fill in known information Cross-multiply: 6750 = 75 b 75 90 = b Divide by

0 -6: The Percent Proportion What is 35% of 250? 17 is what percent of 68? 25% Thirty percent of a number is 39. Find the number. 87. 5 130 Rudy went to see a baseball game. While keeping stats, he counted 44 at bats for the home team. Of these, 11 batters made a hit. What percent of batters got a hit for the home team? 25%

0 -6: The Percent Proportion Assignment Pages P 21 -P 22 Problems 1 – 31 (odds)