this post was submitted on 21 Jul 2024
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[–] JackbyDev@programming.dev 1 points 4 months ago* (last edited 4 months ago)

Move the decimal place one to the left of the subtotal. (Don't tip on taxes lol.) Say, $59 becomes $5.90. Then multiply by two. So tip roughly $12. Even if you mess up and round down when you shouldn't, at worst you'd only tip $1.80 less than you "should".