How to sum based on the selection

I have a selection like this

A: English ($80/week)

B: Algebra 1 ($70/week)

C: Geometry ($70/week)

then

I have a weekly total. How can I sum them if any one of them (A, B, or C) is selected?

Hi, thank you for reaching out to us.

You can make use of the Use Calculation Values in the selection and set the value of each option.




Then add a Form Calculation widget and set your selection field in the formula.








I hope this will help. Let us know if you have any questions.

Great!