Question

Chili’s adds a 20% tip to any group over 8 people the tip alone was $30. What was the bill for the food and drinks?

Answer 1

$150

Explanation:

A tip would be 20% of the cost. So 30 is 20% of the cost. Let's find the total cost.

Use the percent proportion: percent/100 = part/whole.

20/100 = 30/x

20x=3000

Divide each side by 20 to isolate the variable.

3000/20= 150

So 150 is our total cost. Now we need to subtract 30 from that.

150-30=120.

So our food and drinks bill would be $150.

Double check:

20/100=30/150

Simplify down to

1/5=1/5

So yes, it is correct.