document.write( "Question 1185719: Please help with the homework.
\n" ); document.write( "1. Calculate the total amount earned if R1200 is invested at 7.5% interest p.a. for 2.5 years.
\n" ); document.write( "2. Calculate the simple interest earned on investing R3000 at 6% interest p.a. for 4years.
\n" ); document.write( "3.calculate the simple interest owned on a loan of R5080 at 9% interest for 3years
\n" ); document.write( "4. Calculate the total amount owed if R9000 is borrowed at 15% interest p.a for 3 month s \n" ); document.write( "

Algebra.Com's Answer #849627 by ikleyn(52781) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "To the reader of this post.\r
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\n" ); document.write( "\n" ); document.write( "I'd like to point some deficiencies in the solution/ (in the post) by @CPhill.\r
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document.write( "(1)  In this problem, all questions relate to    interest - not to compound interest.\r\n" );
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document.write( "     In his post, @CPhill writes \r\n" );
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document.write( "           \"Since the problem says \"interest p.a.\" (per annum), it implies compound interest\". \r\n" );
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document.write( "     This statement is incorrect. This phrase does not imply that the interest is compounded.\r\n" );
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document.write( "     Right after this phrase, @CPhill writes \"the formula for compound interest is:  A = P*(1+rt)\".\r\n" );
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document.write( "     But this formula is NOT for compound interest - it is standard formula for simple interest, ONLY.\r\n" );
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document.write( "     So, in this part, @CPhill mistakenly refers to compound interest, but factually uses \r\n" );
document.write( "     the formula and makes calculations for simple interest.\r\n" );
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document.write( "(2)  The same my notice goes for part (4), where @CPhill makes the same mistake: \r\n" );
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document.write( "         he declares that will use the formula for compound interest, but factually uses the formula\r\n" );
document.write( "         for simple interest.\r\n" );
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\n" ); document.write( "\n" ); document.write( "A certificate from Artificial Intelligence\r
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document.write( "        \"Interest per annum\" means the interest rate calculated over a period of one year, \r\n" );
document.write( "        essentially signifying the percentage of interest you would earn or owe on a loan \r\n" );
document.write( "        or investment within a single year; \"per annum\" is a Latin phrase meaning \"by the year.\"\r\n" );
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\n" ); document.write( "\n" ); document.write( "The link to this AI source\r
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\n" ); document.write( "\n" ); document.write( "https://www.google.com/search?q=interest+per+annum+meaning&rlz=1C1CHBF_enUS1071US1071&oq=interest+per+annum+meaning&gs_lcrp=EgZjaHJvbWUyCQgAEEUYORiABDIHCAEQABiABDIICAIQABgWGB4yCAgDEAAYFhgeMggIBBAAGBYYHjIICAUQABgWGB4yCAgGEAAYFhgeMggIBxAAGBYYHjIICAgQABgWGB4yCAgJEAAYFhge0gEKMTIxOThqMGoxNagCCLACAQ&sourceid=chrome&ie=UTF-8\r
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