Chapter 10.III, Problem 18RE

### Contemporary Mathematics for Busin...

8th Edition
Robert Brechner + 1 other
ISBN: 9781305585447

Chapter
Section

### Contemporary Mathematics for Busin...

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

# The following interest-bearing promissory notes were discounted at a bank by the payee before maturity. Use the ordinary interest method, 360 days, to calculate the missing information. Face Interest Date of Term of Maturity Maturity Date of Discount Discount Value Rate (%) Note Note (days) Date Value Discount Period (days) Rate (%) Proceeds 18. 850 June 7 125 _____ ____ Sept. 3 _____ 16.5 __________

To determine

To calculate: The maturity date, maturity value, discount period and proceeds of the promissory note where face value is $850, interest rate is 1312% for 125 days. On 3 September, note was discounted at the rate 16.5% and the date of the note is 7 June. Explanation Given Information: Face value is$850, interest rate is 1312% for 125 days. On 3 September, note was discounted at the rate 16.5% and the date of the note is 7 June.

Formula used:

Steps for determining the maturity date of a loan are:

Step1. Calculate the number of days that are left in the month loan is taken by subtracting the loan date from the number of days in the month.

Step2. Subtract the number of days remaining in the first month from the total duration of loan.

Step3. Keep on subtracting the days from consequent months until the maturity date corresponds to the difference.

The formula to calculate Maturity value is,

MV=P(1+RT)

Where, MV is Maturity value, P is Principal Amount, R is the rate of interest, and T is the time duration.

Steps for determining number of days of a loan are:

Step1. Calculate the number of days that are left in the month loan is taken by subtracting the loan date from the number of days in the month.

Step2. Determine the number of days for next succeeding months.

Step3. Calculate the number of days that are left in the last month till the due date.

Step4. Add all the days calculated.

The formula to calculate the time for ordinary interest is,

Time=Number of days of a loan360

The formula to compute the amount of bank discount is,

Bank Discount=Maturity value×Discount Rate×Time

The formula to calculate amount of proceeds is,

Proceeds=Maturity valueDiscount

Calculation:

Calculate the number of days that are left in the month when the loan was taken by subtracting the loan date from the number of days in the month as:

Number of days left=Total days in that monthLoan Date=307=23

Subtract the number of days left that were left when the loan was taken from the total duration of the loan as:

12523=102

In the month of July, August and September, there are 92 days. So, out of 102 days, 92 will be utilized by the month of July, August and September.

Now, total number of remaining days are 10.

So, maturity date is October 10.

Consider that principal amount is $850, rate of interest is 1312%, time duration is 125 days. Simplify the rate of interest as, 1312%=272%=13.5%=13.5100=0.135 The principal amount is same as the face value. Compute the maturity value by substituting$850 for principal amount, 0.135 for rate of interest, 125360 for time duration in the formula, “MV=P(1+RT)” as,

MV=P(1+RT)=\$850(1+0

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