Question

At what time will a sum of Rs.800 at 5% p.a. C.I amount to Rs.882

Answer 1

Answer:

2 Years

Step-by-step explanation:

P= 800

A= 882

r = 5%

A = p(1+r/100)^n

or 882=800(1+5/100)^n

882/800=(21/20)^n

441/400=(21/20)^n

(21/20)^2=(21/20)^n

=> n=2

2 Years

Answer 2

Answer:

P= 800

R= 5%

A= 882

T= ?

By using CI formula..

A= P[1+R/100]^n

882= 800[105/100]^n

882/800=[105/100]^n

[21/20]^2 = [21/20]^n

n = 2

Where n is time in years.