Chapter 10.I, Problem 7RE

### 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

# Use the exact interest method (365 days) and the ordinary interest method (360 days) to compare the amount of interest for the following loans.Principal Rate (%) Time (days) Exact Interest Ordinary Interest__________________________________________________________________________$45,000 13 100$1,602.74 $1,625.00__________ _________ To determine To calculate: The comparison between exact interest and the ordinary interest for the loan of$45000 over a period of 100 days at a rate of interest of 13% per annum by Exact interest method and ordinary interest method.

Explanation

Given Information:

The loan of $45000 is taken at the rate of interest, 13% per annum for the time period of 100 days. Formula Used: The simple interest formula is I=P×R×T, where T is the time period in years. For exact interest, T=Numberofdaysofloan365 For ordinary interest, T=Numberofdaysofloan360 Calculation: Consider the data provided as the loan of$45000 is taken at the rate of interest of 13% per annum for the time period of 100 days.

Then the Interest can be calculated in the following manner,

The time period for exact interest is,

T=100365

ExactInterest(I)=P×R×T

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