Answer:
XX is 48000
Step-by-step explanation:
The use of Microsoft excel is essential for this.
Consider that the principal is XX
and time for repayment is 10 years
Simple Interest = (Principal*Rate*Time)/100
If the 1st year interest = 3600
Then Principal = (3600*100)/rate
And rate can be calculated as (3600*100)/principal
But in this case, since we are dealing with percentage in rate, say
rate = 3600/principal
The rate will be equal to 7.5%
If rate is 7.5%
Then Principal = (3600*100)/7.5
Principal XX = 48000