the Smith family went out to dinner and received great service. They decided to leave a 20% tip for their waitress. If their dinner bill totaled $90, how much was the tip? How do I set up the problem to find the answer?
Let T = amount of tip given by the family
T = (90)(0.20)
T = 18
The tip given by the family is $18.
Thank you blue Ridge
To set up the problem, follow these steps:
Step 1: Calculate the tip rate.
The Smith family decided to leave a 20% tip. To calculate the tip rate, divide 20 by 100:
Tip rate = 20/100 = 0.2
Step 2: Find the amount of the tip.
To find the amount of the tip, multiply the dinner bill by the tip rate:
Tip amount = Dinner bill * Tip rate
Given: Dinner bill = $90 and Tip rate = 0.2
Tip amount = $90 * 0.2
To find the answer, solve the equation:
Tip amount = $18
Thus, the tip amount for their waitress is $18.
To find the amount of tip the Smith family left, you can set up the problem as follows:
1. Calculate the tip percentage: Since they decided to leave a 20% tip, the tip percentage is 20% or 0.20 (in decimal form).
2. Multiply the dinner bill by the tip percentage: Multiply the dinner bill total ($90) by the tip percentage (0.20) to find the amount of tip.
Tip = Dinner bill x Tip percentage
= $90 x 0.20
Here's the calculation simplified:
Tip = $90 x 0.20
= $18
Therefore, the tip left by the Smith family is $18.