Question

P- 1000
T= 4 years
I=?
R = ?
A = 1300​

Answer 1

Answer

P=1000

T=4years

I=?

R=?

A=1300

Let's start,

Formula of Interest

=Amount-Principal

=1300-1000

=300

Therefore, we got the answer of Interest.

Now we find the answer of Rate.

Formula of Rate is

=Interest ×100/Principal ×Time

=300 ×100/1000 ×4

=300×100

=30000

=1000×4

=4000

=30000/4000

=30/4

=7.5

So,answer is=7.5