Two fellows, Brother A and Brother B, each had sisters, Sister A and Sister B.

The two fellows argued about which one stood taller over his sister.

It turned out that Brother A won by 17 centimeters.

Brother A was 186 cm tall.

Sister A was 87 cm tall.

Brother B was 193 cm tall.

How tall was Sister B?

Two fellows, Brother A and Brother B, each had sisters, Sister A and Sister B.

The two fellows argued about which one stood taller over his sister.

It turned out that Brother A won by 17 centimeters.

Brother A was 186 cm tall.

Sister A was 87 cm tall.

Brother B was _____ cm tall.

Sister B was _____ cm tall.

1. What does it mean for all of the numbers to "work"?
   
   
   
   
   
   
   
2. Find two pairs of numbers (i.e., four numbers) that work.
   
   
   
   
   
   
3. What must be true about ANY set of numbers height so that everything works out? How do you know this?

Two fellows, Brother A and Brother B, each had sisters, Sister A and Sister B.

The two fellows argued about which one stood taller over his sister.

It turned out that Brother A won by 17 centimeters.

Brother A was _____ cm tall.

Sister A was _____ cm tall.

Brother B was _____ cm tall.

Sister B was _____ cm tall.

1. What does it mean for all of the numbers to "work"?
   
   
   
   
   
   
   
2. Find two sets of numbers (i.e., eight numbers) that work.
   
   
   
   
   
   
3. What must be true about ANY set of numbers height so that everything works out? How do you know this?