Justin deposited $2,000 into an account 5 years ago. simple interest was paid on the account. he has just withdrawn $2,876. what interest rate did he earn on the account?

8.76%

Step-by-step explanation:

The formula to find the simple interest is given by :-

, where P is the principal amount, r is rate of interest () in decimal and t is the time ( in years).   (1)

Given : Justin deposited $2,000 into an account 5 years ago.

i.e. P = $2,000 ,  t= 5 years

He has just withdrawn $2,876. i.e. Future value = $2,876

Interest (I)=$2,876-$2,000=$876  [Subtract Principal value from Future value]

Substitute all the above values of P , t , and I in the formula (1) , we get

In percent ,

Hence, the rate of interest = 8.76%

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6