Q. Mira has breakfast at a restaurant. She leaves a 20% tip of 1.80. What is the price of Mira's breakfast, before tip?
Calculate Tip Amount: To find the price of Mira's breakfast before the tip, we need to calculate the original amount that resulted in a 20% tip of $1.80. We can set up the equation where the original amount times 20% (or 0.20) equals the tip amount of $1.80. Tip amount = Original amount ∗ Tip percentage $1.80= Original amount ∗0.20
Solve for Original Amount: Now we need to solve for the Original amount. We do this by dividing the tip amount by the tip percentage in decimal form.Original amount = Tip amount / Tip percentageOriginal amount = $1.80/0.20Original amount = $9.00
Verify Calculation: We have found that the original amount, which is the price of Mira's breakfast before the tip, is $9.00. We should check our calculation to ensure there is no math error.20\% of $9.00 is indeed $1.80 because $9.00×0.20=$1.80.
More problems from Percent of a number: tax, discount, and more