Answer:
The interest gained by Vinny in 9 years = Rs. 9562.5
Explanation:
Money invested in bank account, P = Rs. 25000
Rate of interest, r = 4.25 %
Number of years, r = 9
Accoridng to simple interest formula,
Interest gained =
=

= Rs. 9562.5
Total amount in the bank after 9 years = 25000 + 9562.5
=Rs. 34562.5