Monday Math: Sibling Rivalry
Posted by MomOnMars on December 05, 2011
Welcome to Shana’s Corner, where each Monday, I post a question from the Blue Filing Box of math problems. The first person with the correct answer wins. This week’s prize is a copy of Mastermind by Pressman…a challenging code game. My family played this…so much fun! Named a Dr. Toy Best Classic Toy Game, 2009.
Sibling Rivalry
Joe’s sister Susan is nine years older than he is. In three years, Susan will be twice as old as Joe will be. How old is Joe now?
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