Your parents want to leave a 20 percent tip. The tip is calculated on the total amount of the meal and tax. Find the tip.
Find the total amount of the meal, tax, and tip.

See below

Step-by-step explanation:

Since there are no numbers in this question, you would use this equation.

Meal + tax = total meal cost before tip

Take the total meal cost * .20 = amount of tip

55/i dont know i do it for the points

step-by-step explanation:

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: