Tip & Bill Percentages
💡 How to solve ▾
Find 10% of the bill first, then scale it. A 20% tip is double the 10%; 15% is the 10% plus half of it again.
A worked example
A $60 bill: 10% is $6. For 20% double it to $12; for 15% add half of $6 to get $9.
Questions people ask
Fastest way to a 20% tip? ▾
Move the decimal one place to get 10%, then double it. On a $45 bill, 10% is $4.50, so 20% is $9.
How do I split a tipped total between friends? ▾
Add the tip to the bill first, then divide by the number of people. Rounding the per-person share up a little covers tax and keeps it simple.