Lesson 8 9 percent problems
- 1. Name __________________________________ Date ______________________ Mrs. Labuski & Mrs. Rooney Period _______ Lesson 8-9 Percent Problems The frozen-yogurt stand in the mall sells 420 frozen-yogurt cups per day on average. 45% of the frozen-yogurt cups are sold to teenagers. On average, how many frozen-yogurt cups are sold to teenagers each day? To find the percent on number is of another, use this proportion % = is 100 of We want to find out 45% is how much out of 420. Circle the key information in the sentence. Fill in the proportion. 1. 8% of 40 2. 105% of 80 3. 35% of 300 4. 13% of 66
- 2. 5. Jenna ordered 28 shirts for her soccer team. Seventy-five percent of those shirts were size large. How many large shirts did Jenna order? 6. Douglas sold 125 sandwiches to raise money for his boy scout troop. Eighty percent of those sandwiches were sold in his neighborhood. How many sandwiches did Douglas sell in his neighborhood? 7. Samuel has run for 45 minutes. If he has completed 60% of his run, how many minutes will Samuel run in all?
- 3. Name __________________________________ Date ______________________ Mrs. Labuski & Mrs. Rooney Period _______ Lesson 8-9 Percent Problems The frozen-yogurt stand in the mall sells 420 frozen-yogurt cups per day on average. 45% of the frozen-yogurt cups are sold to teenagers. On average, how many frozen-yogurt cups are sold to teenagers each day? To find the percent on number is of another, use this proportion % = is 100 of We want to find out 45% is how much out of 420. Circle the key information in the sentence. Fill in the proportion. % = is 100 of 45 = x 100 420 100x = 18900 ÷100 ÷100 X = 189 189 frozen-yogurt cups are sold to teenagers each day 1. 8% of 40 2. 105% of 80 % = is % = is 100 of 100 of 8 = x 105 = x 100 40 100 80 100x = 360 100x = 8400 ÷100 ÷100 ÷100 ÷100 x = 36 x=84 3. 35% of 300 4. 13% of 66 % = is % = is 100 of 100 of 35 = x 13 = x 100 300 100 66 100x = 10500 100x = 858 ÷100 ÷100 ÷100 ÷100 x = 105 x=8.58
- 4. 5. Jenna ordered 28 shirts for her soccer team. Seventy-five percent of those shirts were size large. How many large shirts did Jenna order? % = is 100 of 75 = x 100 28 100x = 2100 ÷100 ÷100 X = 21 Jenna ordered 21 large shirts 6. Douglas sold 125 sandwiches to raise money for his boy scout troop. Eighty percent of those sandwiches were sold in his neighborhood. How many sandwiches did Douglas sell in his neighborhood? % = is 100 of 80 = x 100 125 100x = 2000 ÷100 ÷100 x = 20 Douglas sold 20 sandwiches in his neighborhood. 7. Samuel has run for 45 minutes. If he has completed 60% of his run, how many minutes will Samuel run in all? % = is 100 of 60 = x 100 45 100x = 2700 ÷100 ÷100 x = 27 Samuel will run 27 minutes.