document.write( "Question 651340: Johns test scores are 95,90,83. What must he score on his next test to have an average test score of 90 on the four test? \n" ); document.write( "

Algebra.Com's Answer #407608 by shweta(56) $\"\"$ $\"About$

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John's test scores are 95,90,83 ,x
\n" ); document.write( "Average test score in four tests= 90 .
\n" ); document.write( "We need to find the score in the fourth test, x
\n" ); document.write( "Average, 90= (95+ 90+ 83+x)/4
\n" ); document.write( "On cross- multiplication
\n" ); document.write( " 95+90+83+x= 90*4
\n" ); document.write( " 268+ x= 360
\n" ); document.write( " x= 360-268
\n" ); document.write( " x= 92, the score in the fourth test \n" ); document.write( "

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