The steps below can be used to find an approximation for 15% of a restaurant bill. 1) Round off the bill to the nearest dollar. 2) Find 10% of this amount by moving the decimal point one place to the left. 3) Take half of the amount obtained in Step 2 and add it to the result of Step 2. Assume that you wish to tip 15% on a restaurant bill of $14.38. Use the method above to determine the amount of the tip