document.write( "Question 969523: Tim planted 45 of the 106 tree in the forestry project.what percent of the tree in the project did tim plant?.answer are rounded to nearest whole number. Show how u get answer please \n" ); document.write( "
Algebra.Com's Answer #592460 by KMST(5328)\"\" \"About 
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As a fraction, Tim planted \"45%2F106\" of the trees.
\n" ); document.write( "WE cannot simplify that fraction,
\n" ); document.write( "and we cannot write it as a fraction with a \"100\" for a denominator.
\n" ); document.write( "However, we can write a ratio, with a \"100\" for a denominator,
\n" ); document.write( "that is approximately equal to \"45%2F106\" .
\n" ); document.write( "If you divide \"45\" by \"106\" , you get \"45%2F106=%220.42452830186679...%22\" .
\n" ); document.write( "The digits will eventually repeat, but it may take up to 105 digits before we see a repetition.
\n" ); document.write( "I would just approximate it as
\n" ); document.write( "\"45%2F106=about0.42453=0.42453%2A100%2F100=42.453%2F100\" .
\n" ); document.write( "That means that for every \"100\" trees that were to be planted,
\n" ); document.write( "Tim planted about \"42.453\" trees,
\n" ); document.write( "and that is the approximate percentage, \"%2242.453%25%22\" .
\n" ); document.write( "To calculate a percentage,
\n" ); document.write( "you just divide to get the ratio as a decimal,
\n" ); document.write( "and then multiply times \"100\" .
\n" ); document.write( "which rounds to \"highlight%2842%29\" ,
\n" ); document.write( "because \"42\" is closer to \"42.453\" than \"43\" .
\n" ); document.write( "So, we say that Tim planted \"highlight%28%2242%25%22%29\" of the trees called for in the project.
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\n" ); document.write( "NOTES:
\n" ); document.write( "A percentage is a ratio, which is sort-of a fraction.
\n" ); document.write( "If Joe had planted \"85\" out of \"200\" trees in a project,
\n" ); document.write( "he would have planted \"85%2F200=0.425=42.5%2F100=425%2F1000\" .
\n" ); document.write( "The fractions \"85%2F200\" and \"425%2F1000\" are equivalent fractions.
\n" ); document.write( "We cannot call \"42.5%2F100\" a fraction; we call it a ratio,
\n" ); document.write( "and we say that the ratios
\n" ); document.write( "\"85%2F200\" , \"42.5%2F100\" , and \"425%2F1000\" are the same.
\n" ); document.write( "They are equal, they are equivalent.
\n" ); document.write( "In that case we would say that \"85\" out of \"200\" is \"%2242.5%25%22\" ,
\n" ); document.write( "and if we had to round ti whole numbers, we would sat it's \"%2243%25%22\" ,
\n" ); document.write( "because \"42.5\" is a s close to \"42\" as it is to \"43\" ,
\n" ); document.write( "but the usual custom is to always round up in those cases.
\n" ); document.write( "{if you have to get rid of a bunch of digits to round,
\n" ); document.write( "you look art the first digit you are discarding.
\n" ); document.write( "If it is 5 or more , you round up,
\n" ); document.write( "otherwise you round down>
\n" ); document.write( "So, \"42.3251\" rounds down to \"42\" , but \"42.5\" , \"42.50112\" and \"42.637\" round up to \"43\" .
\n" ); document.write( "(If the first digit after the decimal point is not 5 or more,
\n" ); document.write( "you just get rid of all digits after the decimal point,
\n" ); document.write( "and leave the \"42\" as is.
\n" ); document.write( "Otherwise you up the \"42\" to \"43\" ).
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