



 
Hi Bo, I don't like the way this problem is worded. I think it should say "double the sum of 1 and twice the number guessed by Jane". Suppose the number guessed by Jane is j. Twice the number guessed by Jane is then 2j. The sum of 1 and twice the number guessed by Jane is therefore 2j + 1. Double this is 2(2j + 1). This is the number guessed by Tom. Hence
Solve for j. Penny  


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