<prompt> Human: Hello!My partner and I have recently moved in together and weve tried to work out the best way of sharing our financial responsibilities fairly. However my partner always seems to struggle whereas Im able to save up were halfway through the month already and shes only got 23 left...I earn 1200 per month.She earns 500 per month.We split the cost of join costs Mortgage, Electric, council tax, food shopping, water rates, TV License and internet package by a percentage 41.7 based on the differences between our earnings. In theory this should leave us on a level ground in terms of the percentage of our wages that are left-over.For example if we get a bill for 100. She pays 41.70, I pay the remainder - have we worked this out right? I have a feeling weve derped up mathematically!Any other suggestions? Other than to tell her off for buying pretty things she cant afford!  <response>: You have derped up. She receives 5005001200 29.4 of your combined income, not 41.7 of it. 