Example 6.20 from Prealgebra, 6.2 Solve General Applications of Percent

Solve General Applications of Percent: example 6.20

Dezohn and his girlfriend enjoyed a dinner at a restaurant, and the bill was $$68.50 .$ They want to leave an $18%$ tip. If the tip will be $18%$ of the total bill, how much should the tip be?

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Cierra and her sister enjoyed a special dinner in a restaurant, and the bill was $$81.50 .$ If she wants to leave $18%$ of the total bill as her tip, how much should she leave?

How did it go?

What are you asked to find?	the amount of the tip
Choose a variable to represent it.	Let $t =$ amount of tip.
Write a sentence that give the information to find it.	The tip is 18% of the total bill.
Translate the sentence into an equation.
Multiply.
Check. Is this answer reasonable?
If we approximate the bill to $70 and the percent to 20%, we would have a tip of $14. So a tip of $12.33 seems reasonable.
Write a complete sentence that answers the question.	The couple should leave a tip of $12.33.

What are you asked to find?	the amount of the tip
Choose a variable to represent it.	Let $t =$ amount of tip.
Write a sentence that give the information to find it.	The tip is 18% of the total bill.
Translate the sentence into an equation.
Multiply.
Check. Is this answer reasonable?
If we approximate the bill to $70 and the percent to 20%, we would have a tip of $14. So a tip of $12.33 seems reasonable.
Write a complete sentence that answers the question.	The couple should leave a tip of $12.33.

Solve General Applications of Percent: example 6.20

Solution

Your turn

Solve General Applications of Percent: example 6.20

Solution

Your turn