Question

A restaurant bill is \[ $ 84.97\] , how do you estimate a $ 20\% $ . tip and a $ 15\% $ tip?

Answer 1

Hint: To solve this we should know about the tip that is given in addition to the total amount of bill. It is extra money which is given to the waiter or worker for their work.
To calculate the tip we will add it on the bill amount.
So, keep in mind tips are not added in the bill amount. It is calculated separately.

Complete step by step solution:
As we have to calculate the tip amount which is given over bills.
 Estimate a $ 20\% $ tip:
To get this, we will calculate the $ 20\% $ of bill amount \[ $ 84.97\]
A $ 20\% $ tip is \[\ = \dfrac{{20}}{{100}} \times \ $ 84.97 = \ $ 16.997 \cong \ $ 17\]
Estimate a $ 15\% $ tip:
To get this, we will calculate the $ 15\% $ of bill amount \[ $ 84.97\] .
A $ 15\% $ tip is \[\ = \dfrac{{15}}{{100}} \times \ $ 84.97 = \ $ 12.745 \cong \ $ 13\].
Hence we get from above that a $ 20\% $ tip is \[\ $ 17\] and a $ 15\% $ tip is \[ $ 13\] .
So, the correct answer is “ $ 20\% $ tip is \[\ $ 17\] and a $ 15\% $ tip is \[ $ 13\] ”.

Note: As we had calculated above that tip is additional money which is given to workers for their work as a gift. Percentage calculation is basic mathematics which we use in our daily life to calculate profit or loss or in calculating changes in percentage. In the science field it is also an important measurement term when we are doing some experiment because we try to find change in output as per change in input.