document.write( "Question 504473: A batsman in his 17th inning makes 85 scores and thereby increases his average by 3. His average after 17th inning is? \n" ); document.write( "

Algebra.Com's Answer #339693 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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A batsman in his 17th inning makes 85 scores and thereby increases his average by 3.
\n" ); document.write( "His average after 17th inning is?
\n" ); document.write( ":
\n" ); document.write( "let a = his average after the 17th inning
\n" ); document.write( "then
\n" ); document.write( "(a-3) = his average before the 17th
\n" ); document.write( ":
\n" ); document.write( "a = $\"%28%2816%28a-3%29%2B85%29%29%2F17\"$
\n" ); document.write( "multiply both sides by 17
\n" ); document.write( "17a = 16(a-3) + 85
\n" ); document.write( "17a = 16a - 48 + 85
\n" ); document.write( "17a - 16a = 37
\n" ); document.write( "a = 37 his average after 17 innings \n" ); document.write( "

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