1.find
a)simple interest earned
b) simple amount
for the following investment
i)RM20000 for 4 years 6 months at 11% per annum
I = PRT
= 20000(.11)(4.5)
= 9900
so amount = 20000+9900
= ....
(4 years, and 6 months = 4.6 years)
To find the simple interest earned and the simple amount for the given investment, we need to use the formula for calculating simple interest:
Simple Interest = (Principal Amount * Rate * Time) / 100
Where:
- Principal Amount is the initial amount invested (RM20000)
- Rate is the interest rate per annum (11%)
- Time is the investment duration in years (4 years 6 months = 4.5 years)
Now, let's calculate the simple interest earned.
Step 1: Convert the 6 months into a fraction of a year.
6 months = 6/12 = 1/2 years
Step 2: Calculate the simple interest earned.
Simple Interest = (Principal Amount * Rate * Time) / 100
= (20000 * 11 * 4.5) / 100
= 9900
So, the simple interest earned on the investment is RM 9900.
To find the simple amount, which is the final value of the investment, we add the simple interest to the principal amount.
Simple Amount = Principal Amount + Simple Interest
= 20000 + 9900
= 29900
Therefore, the simple amount for the investment is RM 29900.