Q. Aubrey's dinner cost $85. She tips the waitstaff 30% for excellent service.How much does Aubrey tip the waitstaff?$
Convert to Decimal: Determine the percentage of the tip in decimal form.To calculate the tip, we need to convert the percentage to a decimal. To do this, we divide the percentage by 100.30%÷100=0.30
Calculate Tip Amount: Calculate the tip amount by multiplying the cost of dinner by the decimal form of the tip percentage.Aubrey's dinner cost $85, and the tip percentage in decimal form is 0.30. So, we multiply these two values to find the tip amount.$85×0.30=$25.50
Verify Calculation: Check the calculation for any mathematical errors.We can verify the multiplication by approximating. 30% is close to one-third, and one-third of $90 (which is close to $85) would be $30. Since our result is a bit less than $30, it seems reasonable given that $85 is less than $90.
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