# A lunch check is $27.95. How do you estimate a 15% tip? ##### 2 Answers Nov 19, 2016 4 or 5 dollars depending on the service #### Explanation: 10%of 30 =3 so 15%=4.5 When estimating round off numbers to 1 significant figures so calculations are easy!! Nov 19, 2016 As an estimate, either $4.20 " or " $4.50 would be close to 15% as a tip. #### Explanation: 10% is pretty simple to calculate because it just involves moving the comm one place to the left. 5% is half of 10% $27.95 is close to $28, and for an estimate, close to $30

10% of $28 =$2.80" and "10% of $30 = 3 5% " of "$28 = $1.40" and "5% " of "$30 = $1.50 15% " of "$28 = $4.20" and " 15% " of "$30 = $4.50 As an estimate, either $4.20 " or " \$4.50 would be close to 15% as a tip.