Question

Frances left a 21% tip on meal. Including the tip, its cost was $21.78. What was the cost of the meal before the tip? Put the steps please, I know the answer, I need to know the steps

Answer 1

The price of the meal plus 21% of the price of the meal is the total cost. so the equation can be written:
\[x+(.21)x=21.78\]
We can combine the x terms:
\[1.21x=21.78\]
Now we want x alone so divide through by 1.21:
\[x=\frac{ 21.78 }{ 1.21 }\]
Now you can use your calculator to solve for x.