In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data
interest = 11% = 0.11
n = time = 7 years
C = initial capital = $1000
M = final capital = ?
Money earned in interest = ?
Step 02:
M = C ( 1 + i ) ^ n
M = 1000 * (2.076)
M = 2076.16
Money earned in interest = M - C
= 2076.16 - 1000
= 1076.16
The answer is:
The money earned in interest is $1076.16 .