Allocating a sum of money across options

Hi there, I need to ask my respondents how they allocated a certain amount of cash we provided.
Is there a way to ask something along the lines of:

How have you spent the 50$? (multi-select)

  • option A
  • option B
  • option C
    […]
  • option N

And then for each one selected ask how much was allocated to it? If I do it with a simple roster I am not sure i can put the validation that each single amount, and the total, need to be below 50$.

Thanks!

See, for example, the ‘Burgers’ section in ‘Public example User questions and common patterns’.

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