document.write( "Question 666002: the average of cathys 4 test results so far this year is 65%
\n" ); document.write( "a) what is the total of all 4 test marks?
\n" ); document.write( "b) cathy would like to raise her average mark to 70%. what must she get n her next test to achieve her goal?
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Algebra.Com's Answer #414214 by lynnlo(4176)\"\" \"About 
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4test scores================65+65+65+65=260
\n" ); document.write( " divided by 4 test =======65% average
\n" ); document.write( " she needs to make a 90 on next test to have an average of 70
\n" ); document.write( "65+65+65+65+90=350 divided by 5=========70
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