I'll take a shot at it:
So you're original value is 75,000
You're discount rate for 3 months would be = 1.06^(1/4) = 1.4673846%
Here are you're two binomial trees (the bottom one assumes you by the bank protection):
Since $75,760-$72,846 > $2000 (the cost of the bank protection) it would be beneficial for you to purchase the bank protection.