We want to find if the tip a waiter received is equal to the usual amount. To do so, we will find what percent of the bill he received as a tip. We will use the percent equation to calculate this.
part = percent * whole
We are told that the waiter received $11 as a tip on a $47.2 bill. Let's draw a bar diagram to represent the problem. In the diagram, let p represent the desired percent.
Now we will apply the percent equation to the given situation.
part = percent * whole [0.4em] ↓ [0.4em]
11 = p * 47.2
Next, we will solve the equation that we got for p. To do so, we will use the Division Property of Equality.
We got that p≈ 0.23 is a solution to the equation. To write the decimal as a percent, we need to move the decimal point two places to the right and write the percent symbol.
0.23 = 23 %
We found that the waiter received a tip that is approximately 23 % of the total bill, which is more than the usual amount.
