Question

Frances left a 21​% tip on a meal. Including the​ tip, its cost was​ $30.25. What was the cost of the meal before the​ tip?

Answer 1

Cost of meal before the tip `= color(green)($ 25`

Explanation:

Let cost of the meal M = $ x

Cost of tip #T = $ x * (21/100) = $ 0.21x

Given : Cost of meal + cost of tip = $ 30.25

`:. M + T = 30.25`

#x + 0.21x = 30.25

`1.21 x = 30.25`

`x = 30.25 / 1.21 = color(green)($ 25`

Cost of meal before the tip `= color(green)($ 25`