What rate of interest compounded annually is required to double an investment in 25 years?

The Rate of interest compounded annually is 2.8

Step-by-step explanation:

Given as :

The Principal o investment = P

The Amount of Investment = 2 × P

The time period of investment = 25 years

Le The rate of interest compounded annually = R

So, From compounded method :

Amount = Principal ×

Or, 2 P = P ×  

Or, =  

Or, 2 =  

Or, = 1 +

Or, 1.028 = 1 +  

Or, 1.028 - 1 =  

Or, .028  =    

So,  Rate = 0.028 × 100 = 2.8

Hence The Rate of interest compounded annually is 2.8  Answer

1) letter c.

2) 4 square root of 9

hope this

step-by-step explanation: