Simple Interest Practice

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Question 1
Calculate the simple interest of a $3000 loan with the interest of 3% per year. The duration of the loan is 5 years.

Answer

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A. $450
B. $600
C. $750
D. $1000
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Step by Step Solution 

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Step 1
We can start with the simple interest formula:
simple interest formula

Where:   
  1. P is the principal ($3000)
  2. r is the interest rate per year (3%)
  3. t is the loan duration in years (5 years).
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Step 2
With P=3000, r=3% and t=5, we can substitute these values into the formula as shown (Take note that 3% must be changed to 3/100 before we can calculate): 
using the simple interest formula

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Step 3
The calculated interest is $450. Hence, the answer is A. 
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