document.write( "Question 1202015: An amount of $1100 is deposited for 6 years in an account that earns 6% interest. (Round your answers to two decimal places.)
\n" ); document.write( "(a) Calculate the simple interest earned.
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\n" ); document.write( "\n" ); document.write( "(b) Calculate the interest earned if interest is compounded daily.
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\n" ); document.write( "\n" ); document.write( "(c) How much more interest is earned on the account when the interest is compounded daily?
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Algebra.Com's Answer #836638 by Theo(13342)\"\" \"About 
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sinple interest is i = p * r * n
\n" ); document.write( "i is the intereest
\n" ); document.write( "p is the present value
\n" ); document.write( "r is the interest rate per time period
\n" ); document.write( "n is the number of time periods.
\n" ); document.write( "the time periods are in years.\r
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\n" ); document.write( "\n" ); document.write( "when n = 6 years and r = .06 per year, you get:
\n" ); document.write( "p = 1100
\n" ); document.write( "r = .06
\n" ); document.write( "n = 6\r
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\n" ); document.write( "\n" ); document.write( "formula becomes:
\n" ); document.write( "i = 1100 * .06 * 6 = 396.\r
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\n" ); document.write( "\n" ); document.write( "if the interest rate is compounded daily the formula becomes:
\n" ); document.write( "i = f - p
\n" ); document.write( "i is the interest
\n" ); document.write( "f is the future value
\n" ); document.write( "p is the present value\r
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\n" ); document.write( "\n" ); document.write( "with daily compounding, the time periods are in days.\r
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\n" ); document.write( "\n" ); document.write( "since f = p * (1 + r) ^ n, the formula becomes:
\n" ); document.write( "i = p * (1 + r) ^ n - p
\n" ); document.write( "i is the interest
\n" ); document.write( "p is the present value
\n" ); document.write( "r is the interest rate per year / 365 = interest rate per day (365 days assumed in a year).
\n" ); document.write( "n is the number of years * 365 = number of days.\r
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\n" ); document.write( "\n" ); document.write( "when n = 365 * 6 and r = .06/365 and p = 1100, the formula becomes:
\n" ); document.write( "i = 1100 * (1 + .06/365) ^ (365 * 6) - 1100 = 476.6157097.\r
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\n" ); document.write( "\n" ); document.write( "the difference between the compound interest and the simple interest is 476.6157097 minus 396 = 80.61570989 = 80.62 rounded to two decimal places, in favor of the compound interest..
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