Back price help please

Hi I have a situation that I hope someone can help me with.

In MarketFeeder If I lay a horse for £5 at 30.0 and this horse decides to come back down, I want to catch this horse and back it at 1.3 How much money would I have to put down at 1.3 to make this a zero Exposure?

Hope someone can help

Thanks in advance

hi
29*5=145
145/.3=483.33
and would it get matched.
i think this is correct.


mcbee