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Contemporary Mathematics for Busin...

8th Edition
Robert Brechner + 1 other
ISBN: 9781305585447

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BuyFindarrow_forward

Contemporary Mathematics for Busin...

8th Edition
Robert Brechner + 1 other
ISBN: 9781305585447
Textbook Problem

Solve the following exercises and word problems using formulas.

Principal Time Period (years) Nominal Rate ( % ) InterestCompounded CompoundAmount CompoundInterest
31. $9,630 5 3.1 annually

To determine

To calculate: The compound amount and the compound interest for an investment with principal $9,630 invested at 3.1% interest compounded annually for 5 years.

Explanation

Given Information:

An investment with principal $9,630 invested at 3.1% interest compounded annually for 5 years.

Formula used:

Compounding period can be defined as the duration or length of time from one interest payment to the next. If an investment made for 4 years at 6% compounded annually (once per year) then it would have four compounding period which can be calculated by formula given below:

Compounding periods=Term of investments(years)×m

Here, m is the period per year.

The interest rate per period can be calculated by dividing the annual, or nominal, rate by the number of periods per year,

Interest rate per period=Nominal ratePeriod per year

Compound interest formula:

Compound amount (A) can be calculated as, Compoundamount(A)=P(1+i)n

Here, the principal (P), Interest rate per period (i) and the number of compounding periods (n) are known.

Compound Interest:

It can be calculated by subtracting the principal from compound amount.

CompoundInterest=CompoundAmountPrincipal

Steps for solving the compound interest formula:

Step I: Add 1 to the interest rate per period i.

Step II: Raise to the nth power to the resultant step 1 by using the yx key on your calculator.

Step III: Multiply the resultant of step 2 by the compound amount P.

Calculation:

Consider principal $9,630 invested at 3.1% interest compounded annually for 5 years and solve as below:

Since, the variables-compound amount, time period (years), nominal rate and interest compounded are given; therefore, the compounding period can be calculated as below:

Substitute the values in the formula for interest rate per period and simplify,

Interest rate per period=Nominal ratePeriodperyear=3

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Chapter 11 Solutions

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Sect-11.I P-6RESect-11.I P-7RESect-11.I P-8RESect-11.I P-9RESect-11.I P-10RESect-11.I P-11RESect-11.I P-12RESect-11.I P-13RESect-11.I P-14RESect-11.I P-15RESect-11.I P-16RESect-11.I P-17RESect-11.I P-18RESect-11.I P-19RESect-11.I P-20RESect-11.I P-21RESect-11.I P-22RESect-11.I P-23RESect-11.I P-24RESect-11.I P-25RESect-11.I P-26RESect-11.I P-27RESect-11.I P-28RESect-11.I P-29RESect-11.I P-30RESect-11.I P-31RESect-11.I P-32RESect-11.I P-33RESect-11.I P-34RESect-11.I P-35RESect-11.I P-36RESect-11.I P-37RESect-11.I P-38RESect-11.I P-39RESect-11.I P-40RESect-11.II P-6TIESect-11.II P-7TIESect-11.II P-8TIESect-11.II P-1RESect-11.II P-2RESect-11.II P-3RESect-11.II P-4RESect-11.II P-5RESect-11.II P-6RESect-11.II P-7RESect-11.II P-8RESect-11.II P-9RESect-11.II P-10RESect-11.II P-11RESect-11.II P-12RESect-11.II P-13RESect-11.II P-14RESect-11.II P-15RESect-11.II P-16RESect-11.II P-17RESect-11.II P-18RESect-11.II P-19RESect-11.II P-20RESect-11.II P-21RESect-11.II P-22RESect-11.II P-23RESect-11.II P-24RESect-11.II P-25RESect-11.II P-26RESect-11.II P-27RESect-11.II P-28RESect-11.II P-29RECh-11 P-1CRCh-11 P-2CRCh-11 P-3CRCh-11 P-4CRCh-11 P-5CRCh-11 P-6CRCh-11 P-7CRCh-11 P-8CRCh-11 P-9CRCh-11 P-10CRCh-11 P-11CRCh-11 P-12CRCh-11 P-13CRCh-11 P-14CRCh-11 P-1ATCh-11 P-2ATCh-11 P-3ATCh-11 P-4ATCh-11 P-5ATCh-11 P-6ATCh-11 P-7ATCh-11 P-8ATCh-11 P-9ATCh-11 P-10ATCh-11 P-11ATCh-11 P-12ATCh-11 P-13ATCh-11 P-14ATCh-11 P-15ATCh-11 P-16ATCh-11 P-17ATCh-11 P-18ATCh-11 P-19ATCh-11 P-20ATCh-11 P-21ATCh-11 P-22ATCh-11 P-23ATCh-11 P-24ATCh-11 P-25ATCh-11 P-26ATCh-11 P-27ATCh-11 P-28ATCh-11 P-29ATCh-11 P-30ATCh-11 P-31ATCh-11 P-32ATCh-11 P-33ATCh-11 P-34ATCh-11 P-35ATCh-11 P-36ATCh-11 P-37ATCh-11 P-38ATCh-11 P-39AT

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