1-1 Application of Percents - Portion Formula Portion (P) = Base (B) x Rate (R) Portion “is” Base “of” Rate “%”

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Presentation transcript:

1-1 Application of Percents - Portion Formula Portion (P) = Base (B) x Rate (R) Portion “is” Base “of” Rate “%”

1-2 Solving for Portion Sales of McDonalds drive-thru customers are 60% of total sales. Total sales are $1,600,000. What are the drive-thru sales? Portion = Base x Rate P = $1,600,000 x.60 P = $960,000

1-3 Solving for Rate Sales of McDonalds drive-thru customers are $960,000. Total sales are $1,600,000. What Percent of customers eat in the restaurant? Rate = Portion Base R = $640, 000 $1,600,000 R = 40% $1,600, ,000

1-4 Solving for Base Sales of McDonalds drive-thru customers are 60% of total sales. Sales of eat-in customers are $640,000. What are total sales? Base = Portion Rate B = $640, B = $1,600,000 eat in sales Percent of customers that eat-in

1-5 Rate of Percent Decrease 15 oz. Rate = Portion Base Rate = Amount of Decrease (P) Original Weight (B).80 or 80% Decrease 3 oz. OriginalNew Percent of Decrease (R)

1-6 Rate of Percent Increase $1,000 Rate = Portion Base Rate = $1,500 $1,000 Original sales (B) 1.5 or 150% Increase $2,500 Original New Amount of Increase (P) Percent of Increase (R)

1-7 Solving Word Problems for Unknowns 1) Read the entire Problem 2) Ask: “What is the problem looking for 3) Let a variable represent the unknown 4) Visualize the relationship between the unknowns and variables. Then set up equation 5) Check your results Y = Computers 4Y + Y = 600

1-8 Solving Word Problems for the Unknown

1-9 Solving Word Problems for the Unknown Barbie and Ken sell cars at the Auto World. In April they sold 15 cars. Barbie sold twice as many cars as Ken. How many cars did each sell? 2C + C = 15 3C = 15 C = 5 Barbie - 10 Cars Ken 5 Cars Cars Sold Barbie 2C 2C Ken C +C 15

1-10 Solving and Graphing Inequalities ** If you multiply or divide by a negative number, switch the direction of the inequality.

1-11 Solving and Graphing Inequalities

1-12 Solving and Graphing Inequalities

1-13 Solving and Graphing Inequalities

1-14 Solving and Graphing Inequalities

1-15 Solving and Graphing Inequalities

1-16 Solving and Graphing Inequalities 0 1

1-17 Solving and Graphing Inequalities 0 1

1-18 Solving and Graphing Inequalities 0 1

1-19 Solving and Graphing Inequalities ** If you multiply or divide by a negative number, switch the direction of the inequality.

1-20 Solving and Graphing Inequalities

1-21 Solving and Graphing Inequalities

1-22 Solving and Graphing Inequalities

1-23 Solving and Graphing Inequalities

1-24 Solving and Graphing Inequalities

1-25 Solving and Graphing Inequalities

1-26 Solving and Graphing Inequalities

1-27 Solving and Graphing Inequalities

1-28 Solving and Graphing Inequalities -2 0

1-29 Solving and Graphing Inequalities -2 0

1-30 Solving and Graphing Inequalities -2 0