Compound interest with simple interest?

Question

My head is going to explode. Any help is greatly appreciated even if you can just give me the formula I’m supposed to use for each one. I am so lost.

 

  In the inter-change bank judgment, the investment of $600 million made in 1966 was claim to be worth $125,444,300,221 in 1994.

 

a) Find the interest rate that would give the same growth if simple interest were paid.

 

b)  Find the interest rate that would give the same growth if interest were compounded monthly.

 

c) If the interest had been compounded at 1% interest per week, compounded weekly, find the value of the $600 million investment in 1994.

Answer 1

To get the interest I used: p=fv/(1+int/c)^(n+t)

interest=1.491=$125.4481818*10^9

p principal

fv future value

int interest

c compound

n years

t times