UNDERSTAND THE ANSWERHow is this calculated?
The tip is calculated from the pre-tip bill, then the total is divided equally among the number of people.
Tip and split formulaTotal = Bill × (1 + Tip %) · Per person = Total ÷ People
A practical example
A 20% tip on $86.40 is $17.28. Split between two people, each pays $51.84.