Difference between revisions of "2010 AMC 10A Problems/Problem 11"
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Revision as of 18:09, 16 August 2010
Since we are given the range of the solutions, we must re-write the inequalities so that we have in terms of and .
Subtract from all of the quantities:
Divide all of the quantities by .
Since we have the range of the solutions, we can make them equal to .
Multiply both sides by 2.
Simplify
$b-3-a+3 = 20 \RightArrow b-a = 20$ (Error compiling LaTeX. Unknown error_msg)
We need to find for the problem, so the answer is