Another No Brainer

there is a problem which I hope that your other readers might just be able to help me with.

Let us say that I am a prudent bank, with GBP100. I have the money, I am solvent and I am liquid.

Now another bank has lent some money to somebody who is high risk, so they lent them GBP100 at let's say 15%. However, the person is looking like they are going to default, so I need to borrow GBP100 from another bank, or the taxpayer.

So, I approach the first solvent, prudent bank and offer them let's say for arguments sake 6%.

Now, the first solvent, prudent bank is expected to lend GBP100 plus interest at 6% to a bank which has been lending out the money that they have previously borrowed and lent out at 15%.

This is a no brainer. The wheels are coming off the wagon, the scorched earth policy still continues.