document.write( "Question 1064569: Kathy stood on the middle rung of a ladder. She climbed up 2 rings, moved down 3 rings and then climbed up 7 rings. Then she climbed up the remaining 2 rings to the top of the ladder. How many rings are there in the whole ladder? \n" ); document.write( "

Algebra.Com's Answer #679660 by MathTherapy(10556) $\"\"$ $\"About$

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\n" ); document.write( "Kathy stood on the middle rung of a ladder. She climbed up 2 rings, moved down 3 rings and then climbed up 7 rings. Then she climbed up the remaining 2 rings to the top of the ladder. How many rings are there in the whole ladder?
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Let number of rungs be R
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document.write( "Standing on the middle rung, there are equal number of rungs above her and below her
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document.write( "Thus, she’s standing on the MEDIAN rung, or the  rung
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document.write( "We then get: 
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document.write( "R + 1 + 16 = 2R ------ Multiplying by LCD, 2
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document.write( "17 = 2R – R
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document.write( "R, or number of rungs =  \n" );
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