**Here’s the ANSWER to to last week’s math challenge**

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Last week, we touted Chicago’s Noble Network of Charter Schools … specifically, its intensive math curriculum

And, we presented a challenge question (taken from the 10th grade curriculum) …

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**Noble Charter HS – Math Challenge Question**

The rectangle shown below is divided into four green squares, seven gold squares, four orange squares, and one blue rectangle.

If the perimeter of the blue rectangle is 20 cm, what is the perimeter of the larger rectangle?

Explain your reasoning.

*Recommended: **click to download **and print PDF*

**Here’s the answer …. and a method for get it.**