Put Out the Flags

Tim and Beth both have a string of flags. They have red flags, white flags, blue flags, and union jacks.

They both counted how many of each colour they had.

Tim's flags are $50$% blue, $35$% red, $10$% white and $5$% union jacks.

Beth's flags are $40$% blue, $32$% red, $20$% white and $8$% union jacks.

They both have as few flags as is possible with those percentages.

Who has the most flags?

Who has the most red flags?

Who has the most blue flags?

How many union jacks do they have between them?