Here's a Fall 2013 solution from Donna Lasher,
the teacher of a talented young class from (I think) San Antonio, Texas.
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Hello!
My class believes we have solved the KING MIDDLE SCHOOL problem.
We think there are 48 teachers, 6 groups of 8 teachers.
For each of the 6 periods, 5 groups of teachers are teaching, which makes 40,
while one group of teachers has an off period.
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Thanks to All of you in Ms. Lasher's class!
I think I understand your solution.
But, readers and solution-checkers, is it convincing?
Can you see how they did it and why they think their solution is correct?
What do you suppose they mean by "groups" of teachers?
Then, imagine an extension problem: suppose the state thought 30 students was too many in a class.
They pass a law that says the maximum class size is now 24.
How many new teachers do they have to hire?
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back to the Get it Together Answer Book page
last updated
November 16, 2013
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