RP.3 Review for CFA

RP.3 Review for CFA

By Jerry Schaffer

Part

Whole​

Percent, Part, & Whole

Percent Proportion

Percent %

100​

Part

Whole​

Solve with Cross-Product

Percent Proportion

Percent %

100​

​Multiply then Divide

Multiple Choice

Which Cross product would be correct for "What is 30% of 50?"

• $$50\cdot a=30\cdot100$$  

• $$30\cdot a=100\cdot50$$  

• $$100\cdot a\ =\ 30\cdot50$$  

Tax, Tip, & Discount

​Comparing Vocabulary

Part: Amount of tax/tip/discount

Whole:​ Original Amount/Price

Multiple Choice

Sammy bought a new soccer ball that was marked as 35% off. If the normal price for the ball is $24.50, what price did Sammy pay?

Which solution is set up correctly?

• $$\frac{b}{24.50}=\frac{35}{100}\$$  

  then do 24.50 + 5.08

• $$\frac{b}{24.50}=\frac{35}{100}\$$  

  Then do 24.50 - 5.08

• $$\frac{b}{24.50}=\frac{35}{100}\$$  

  then b = 5.08

Multiple Choice

Sammy bought a new soccer ball that was marked as 35% off. If the normal price for the ball is $24.50, how much did Sammy Save?

Which solution is set up correctly?

• $$\frac{b}{24.50}=\frac{35}{100}\$$  

  then do 24.50 + 5.08

• $$\frac{b}{24.50}=\frac{35}{100}\$$  

  Then do 24.50 - 5.08

• $$\frac{b}{24.50}=\frac{35}{100}\$$  

  then b = 5.08