13,482 views
41 votes
41 votes
Sam invests $800 at 6%/a compounded annually for 5 years. What is the total interest
earned?

User RMWChaos
by
2.5k points

1 Answer

26 votes
26 votes

Answer: 270.58 dollars

======================================================

Work Shown:

  • A = account value after t years
  • P = principal or amount deposited = 800
  • r = interest rate in decimal form = 0.06
  • n = number of times we compound per year = 1
  • t = number of years = 5

So,

A = P*(1+r/n)^(n*t)

A = 800*(1+0.06/1)^(1*5)

A = 1070.58046208

A = 1070.58

After five years, the account will have $1,070.58 in it.

The amount of interest earned is A-P = 1070.58 - 800 = 270.58 dollars.

User MonkeyZeus
by
2.4k points