Answer:
Tonya will pay the amount $45,000 as an interest to the bank.
Explanation:
Principal Value(P) = $60,000
Rate of interest(R) = 5%
Time(T) = 15 years
Simple Interest =

⇒ S.I. =

= $45,000
So, Tonya will pay the amount $45,000 as an interest to the bank.