Ratios and Percents

Quotes From Yogi Berra• A Nickel ain’t worth a dime anymore• Little league Baseball is a very good thing

because it keeps the parents off the streets.• Baseball is 90% mental and the other half is

physical• In theory there is no difference between

theory and practice but in practice there is.• You better cut that Pizza in four pieces

because I am not hungry enough to eat six.

Your Chips CAN BE

OR

TASK #1Form a

collection of 36 chips where 25%

are RED and 75%

are WHITECALLED MIXTURE

A

A

WHAT IS THE RATIO OF WHITE CHIPS TO

RED CHIPS?

MIXTURE A (25% red)

Whites outnumber Reds 3 to 1

TASK #2Form a

collection of 36 chips where 1/3rd are WHITE

and 2/3rd

are REDCALLED MIXTURE

B

B

WHAT IS THE RATIO OF WHITE CHIPS TO

RED CHIPS?

KEEP BOTH MIXTURES

MIXTURE B (1/3rd white)

Reds outnumber Whites 2 to 1

NOW WE MIX THEM TOGETHER!

We will be taking half of each mixture!

WHAT IS THE RATIO OF WHITE TO RED NOW?

DO YOU THINK THERE WILL BE(1) Lots more RED than WHITE(2) About the same RED and WHITE(3) Lots more WHITE than RED

SOON WE MIX THEM TOGETHER!

• 1st – take half of mixture A where the ratio of RED to WHITE is still the same.

THERE WILL BE A SLIGHT TECHNICAL DIFFICULTY – WHAT IS IT?

MIXTURE A (25% Red)

Whites outnumber Reds 3 to 1

SOON WE MIX THEM TOGETHER!

• 2nd – take half of mixture B where the ratio of RED to WHITE is still the same.

THERE WILL BE NO TECHNICAL DIFFICULTY THIS TIME?

MIXTURE B

Reds outnumber Whites 2 to 1

NOW WE MIX THEM TOGETHER!

WHAT IS THE RATIO OF WHITE TO RED NOW?

GO BACK TO MIXTURES A & BTake 1/3rd of B and 2/3rds A

DO YOU THINK THINK THERE WILL BE(1) Lots more RED than WHITE(2) About the same RED and WHITE(3) Lots more WHITE than RED

MIXTURE B (1/3rd white)

Reds outnumber Whites 2 to 1

MIXTURE A (25% red)

Whites outnumber Reds 3 to 1

PUT THEM TOGETHER

2/3rd sOf A

1/3rd Of B

14 red to 22 WHITE