Our adult kids have always paid 20% of their wages towards their keep. They're happy with this but I've been working out the bills and one of them is now paying over the amount needed towards the bills because they're earning more than the others.
My husband says it's fine as it's only a few pounds over and it helps towards wear and tear in the house, fuel for running them round etc but I feel mean charging anything at all above what it actually costs to keep them. Am I being silly for worrying over a couple of quid?