Sierra left $4.50 as a tip for a waiter. This was 18% of the bill before the tip. How much was her total bill before the tip?

Answer:The total bill before the tip would be $ 25Step-by-step explanation:Let x be the amount of total bill,∵ tip is 18% of the bill,So, the amount of bill = 18% of x = 0.18x,According to the question,0.18x = 4.50[tex]\implies x =\frac{4.5}{0.18}=25[/tex]Hence, the total bill before the tip would be $ 25.