20% tip on a bill of $97.67

To calculate a 20% tip on a bill of $97.67, you would first find 10% of the bill by moving the decimal point one place to the left: $9.77.

Then, to find 20%, you would double that amount: $9.77 x 2 = $19.54.

Therefore, a 20% tip on a bill of $97.67 would be $19.54.