Help deadlne tomorrow! Forensic interpretation

Hi,

I'm having a massive stress! I have to interpret some glass evidence. The glass is of 5% freq in a database of 3500 samples and I have the following data.This data is for glass with a 10% freq. How do i calculate these values for a 5% freq but still have my probability of the column still sum to 1? It has to sum to 1 for the next part of my interpretation. Ignore the 1st and second columns, it's the 3rd I'm interested in and they're not related. Before it considered the 10% rarity the orginal data in this column was 0.95, 0.04 and 0.01. I don't understand how they've gotten 0.995 from the original 0.95. HELP MUCH APPRECIATED!

Quantityof glass | ProbabilityPr (E | H**P**,**I**) | ProbabilityPr (E | H**D**,**I**) |

None | 0.05 | 0.995 |

Few(1 to 3) | 0.30 | 0.004 |

Several(More than 3) | 0.65 | 0.001 |