Given:
Amount = Rs. 34476
Rate of compound interest = 4%
Time = years
To find:
The principal value.
Solution:
Formula for amount is
Where, P is principal value, r is rate of interest and t is time in years.
Putting the given values, we get
Now,
Therefore, the value of sum or principal value is Rs.31256.
a.
In order to find the common ratio, we just need to divide a term by the term that comes before it.
So using the terms 20 and -5, we have:
b.
The recursive rule can be found with the formula:
Where an is the nth term and q is the ratio. So we have:
c.
The explicit rule can be written as:
Where an is the nth term, a1 is the first term and q is the ratio. So: