Respuesta :
The average interest gained from three accounts in one year is $913.224
Explanation:
Given:
Bank A:
Principal, P₁ = $250.67
Rate, r₁ = 12 %
Bank B:
Principal, P₂ = $765.13
Rate, r₂ = 7 %
Bank C:
Principal, P₃ = $28500.36
Rate, r₃ = 9 %
Interest from Bank A:
[tex]Interest = \frac{p X r X t}{100}\\\\I = \frac{250.67 X 12 X 1}{100} \\\\I = 30.0804[/tex]
Interest from Bank B:
[tex]Interest = \frac{p X r X t}{100}\\\\I = \frac{765.13 X 7 X 1}{100} \\\\I = 53.5591[/tex]
Interest from Bank C:
[tex]Interest = \frac{p X r X t}{100}\\\\I = \frac{28500.36 X 9 X 1}{100} \\\\I = 2565.0324[/tex]
Average interest gained from three accounts in one year :
[tex]I = \frac{30.0804+53.5591+2656.0324}{3} \\\\I = 913.224[/tex]
Therefore, average interest gained from three accounts in one year is $913.224
