Sumico

Split the bill fairly when someone only had a salad

Six friends, a $312 bill, and one of them only had a $14 salad. An even split asks her to pay $61.36. A fair split takes her salad out first. In Sumico that is a few lines.

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The Sumico colleague separates one salad from a shared dinner bill and adds tips

Even split or fair split

An even split is the bill divided by the number of people, plus the tip. A fair split charges each person for what they had: the salad and its tip for one person, and the rest of the bill divided between the others.

How to split the bill in Sumico

  1. Write the bill and the item paid on its own: bill = $312, salad = $14.
  2. Set the tip once: tip = 18%. Adding a percentage to an amount adds that percentage of it.
  3. Her share: Maya: salad + tip is $16.52.
  4. Everyone else: rest = bill - salad, then Others: rest / 5 + tip is $70.33 each.

For comparison, Even: bill / 6 + tip is $61.36 for everyone.

POV: splitting the dinner bill in Sumico, 0:29. Sound on, no music.

Try it here

This is the real Sumico engine, running in your browser. Change the tip to 20% or the bill to $350, and every share updates.

What the video shows

The group chat: dinner was $312 in total, someone says to split it six ways, and Maya says she only had a salad, $14. In Sumico the bill, the salad and an 18% tip go on their own lines. The even split is $61.36 each. Maya pays $16.52 for her salad with tip, and the other five pay $70.33 each. The answer goes back to the chat.

Questions

How do I change the tip?

Edit tip = 18% to any percentage, and every share that uses it updates.

Can I take out more than one item?

Yes. Name each item, subtract them from the bill, and give each person their own line.

Does it round to cents?

Results show two decimal places by default. The precision can be changed in Preferences.

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