Bell Work Explain why Jamar’s solution was incorrect.

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Bell Work Explain why Jamar’s solution was incorrect.

6-2B Percent Proportion

Review on Solving Proportions Hint: Use Cross Products and solve for x!

Percent Proportions Since we know we can represent a percent as a fraction over 100, we can set up proportions to find missing values!

Types of Percent Problems

Percent Proportion Steps: 1.Write out proportion 2. Find Cross Products 3. Solve

Practice- You Try Rally Coach 1.What percent of 50 is 18? 2.What number is 2% of 35? 3.What percent of $90 is $9? 4.What number is 25% of 180?

6-2C Percent Equation

Percent Equation

Find the Part

Find the Percent

Find the Whole

Three Types of Percent Problems

Practice- You Try Rally Coach 1.What is 6% of 19? is what percent of 150? 3.What percent of 40 is 9? is 32% of what number? 5.14% of what number is 7?

Sales tax and tip! Adding that little extra!

Vocabulary Sales tax

Sales

Sales Tax Method 1: 1)Calculate the tax of the total (% as decimal x total price) 2) Add tax to total 3)Check that it makes sense! Method 2: 1) Calculate the final price including the tax (total x 1+% as decimal, ex: 7% tax  x by 1.07) 2) Check that it makes sense! Discuss with your shoulder partner two different methods for calculating sales tax!

You try- Choose Your Method! What is the total cost of a sweatshirt if the regular price is $42 and the sales tax is 5 ½ %?

Vocabulary Sales tax Tip or Gratuity

Method 1: 1)Calculate the tip of the total (% as decimal x total price) 2) Add tax to total 3) Check that it makes sense! Method 2: 1) Calculate the final price including the tip (total x 1+% as decimal, ex: 20% tip  x by 1.2) 2) Check that it makes sense!

You try- Choose Your Method Scott wants to tip his taxicab driver. If his commute costs $15 and he wants to give the driver a 20% tip, what is the total cost?

Wrap up! Explain to your shoulder partner the two different ways to calculate tax and tip! Explain why one method might be easier than the other.

Discount Saving some money!

Vocabulary Sales tax Tip or Gratuity Discount

Discounts Similar to Tip and Discount, but you subtract! Method 1: 1)Find the percent of the total (this is discount amount) 2)SUBTRACT the discount from the total 3)Check that it makes sense! Method 2: 1)Find the percent you will actually be paying by subtracting the given percent from 100% (example: 30 % off  = 70% you will pay) 2)Multiply the percent you will pay in decimal form by the total 3)Check that it makes sense!

You try- Choose Your Method 1)A shirt is regularly priced at $42. It is on sale for 15% off. What is the sale price of the shirt? 2)What is the total WITH 7% tax?

Wrap up! Describe two methods for finding the sale price of an item that is discounted 30%. Which method do you prefer? Explain.