How do I add a percentage (%) tip to a total of a bill? (Ex - Total : 3.00 with a %18 tip)

To calculate a gratuity or tip on any calculator it is a simple multiplication. In general, the tip amount is the cost times 0.xx and your total including tip, is the cost times 1.xx where xx = the percent you want to leave.  If you want to leave a 20% tip, multiply the cost by 0.20 to get the tip amount or multiply the cost by 1.20 to get the total including tip. If you want to leave a 18% tip, multiply the cost by 0.18 to get the tip amount or multiply the cost by 1.18 to get the total including tip.

Let's say you and a friend had dinner that cost $26.50.  You had good service and want to leave an 18% gratuity.  Put the percentage in decimal form (0.18) then multiply the cost by this number.

26.50 * 0.18 = 4.77.  So your tip is $4.77.

An easy way to get the total amount, dinner plus tip, is to multiply the total by 1.18. 26.50 * 1.18 = 31.27.  This works mathematically because you want to know your original cost plus the tip which is written as 26.50 + (26.50 * 0.18) = ?  Factoring out the 26.50 from this equation you get 26.50 * (1 + 0.18) = 26.50 * 1.18.

How to calculate a tip in your head

You can get a good approximation of a tip by doing it in your head this way.

You can find 10% of your bill by moving the decimal one place to the left.  If 26.50 is 100% then 10% is 2.65.  Since 20% is 2 times 10%, 20% of the bill is 2.65 + 2.65 = 5.30.  Now you know the tip you could leave ranging from poor to good, $2.65 to $5.30.  To find 15%, halfway in between, we know 15% is 10% plus 1/2 of 10% (5%).  2.65 plus about 1.30 is 3.95.

Now you have

10% is 2.65 - by moving decimal 1 place left

15% is 3.95 - 10% + 1/2 of 10%

20% is 5.30 - 10% * 2

This is plenty of information to make a good guess at the tip amount you should leave.  If you decide on about 18%, 4.50 to 5.00 would be a safe guess.

Hope this helps!!! Please mark Brainliest because no matter what you are the Brainliest of all!

Answer:

put to percentage as a decimal (ex. 0.18) then you add that to the total amount

can anyone help answer this question?

it's shown on the picture below. :)

Question 3 (2 points) Saved Which of the following has the larger area? A rectangle with sides 12 inches and 15 inches. A triangle with a base of of 25 inches and a height of 14 inches. Question 3 options: The rectangle by 5 square inches. The triangle by 170 square inches. The rectangle by 170 square inches. The triangle by 5 square inches.

PLEASE HELP ASAP. ANSWER WILL MARK BRAINLIEST. MAKE SURE IT IS CORRECT. TY

In last night's basketball game, Jay made 8 of 12 free throws. About what percent of free throws did Jay make?

dont use for points or else i will report

The equations below represent the numbers y of tickets sold after x weeks for two different local music festivals. Create a table for the ticket sales each week.

There is a closed carton of eggs in Mai's refrigerator. The carton contains e eggs and it can hold 12 eggs. What are some possible values of e that will make both e<12 and e>0 true?

(please answer ill give u a thanks and brainliest)

PLZZZZ HELPPP ILL GIVE ALL CREDIT AND POINTS

.........................................

please help lol!!!!!
If the x-intercepts here are 2 and 7, what would be
the axis of symmetry?
X = 5
y = 2
X= 4.5
y = 4.5

PLZ HELP I WILL MARK BRAINLYIST!!!!!!!!!!!!!!!!Zoe is doing a survey to find the time her classmates spend playing video games. She asks the following question:

Which student spends the most time playing video games?

Part A: Describe the data you would expect her to collect from this question. (5 points)

Part B: Explain whether this is a statistical question. If this is not a statistical question, then modify the question to make it statistical. (5 points)

whats the operation

multiplication ? subtraction ?

in basketball, players can score one point, two points, or three points. in his last game, jake made 20 goals, his 20 goals are recorded in the table below.
Please help!

A Math fact to educate you

carmen just put 14.85 gallons of fuel into her car. there were 4.2 gallons in the car to begin with. how much fuel is in carmen's car now?​

can ppl help me? plss !! ii will mark brainly for the first correct person

Answer the image below:
Qu.{4, 7, 9} U {4, 9, 12, 15}
A. {4,9}
B.{4,7,9}
C.{4,7,9,12,15}
D.{ }

 please I really need help this is being timed please I need to do is find the volume of the composite figures please I really need help

translate the word problem using an inequality and solve and graph it.
Amy is thinking of a number. If she divides the number by 15 and decreases the quotient by 10, the result is less than 20
A. Write an inequality that can be used to find n, the number Amy could be thinking of.
B. Solve the inequality.
Remember to show the solution using: addition property of inequality, subtraction property of inequality, multiplication property of inequality and/ or division property of inequality.
C. Graph the inequality

3 × 8 - ( 2 + 7 ) =
HELLLLLLLPPPPPP

please help! I dont have much time left

Please Help I Didn't Understand The Lesson

PLEASE HELP! I WILL GIVE BRAINLY ALSO SUMMARIZE!! (if u troll ill report!)
A sports medicine major wanted to conduct an experiment to determine if there is a correlation between the members of the soccer team's leg strength and the time it takes for them to sprint 40 yards. He sets up the following test and records the data:

44444444444444444444444444444444444444444444444444444444444

Enter the correct sum in each box. Use the number line to help you.


(A) 4.6 + (–5.9)
_________
|_________|

(B) –4.4 + 6.2
_________
|_________|

(C) 2.1 + 0.5
_________
|_________|

(D) –3.8 + (–1.3)
_________
|_________|

Heyyyyy, um this is like the last problem on my hw and I've been stuck on it for 20 mins or so and only have 18 mins until it locks so any help is appreciated. Use I = PRT, I=PRT to find the total amount in the savings account. Type in "money form". $500.00 at 4% for 5 years :p :p :p

A runner runs 3.65 miles on Saturday and 4.5 miles on Sunday. How many miles did she run that weekend?

30 Points to whoever gets this right ( needs an equation and answer )

Carter wants to ride his bicycle 28.7 miles this week. He has already ridden 17 miles. If he rides for 3 more days, write and solve an equation which can be used to determine mm, the average number of miles he would have to ride each day to meet his goal.

please answer for me :

someone please help me