We need to calculate the total of bills first
total bills = 23.59 + 40.65 + 30.50 + 15.68
total bills = 110.42
The total bills is $110.42
Find the percent of tip using the total bills above. We count it like this,
percentage = amount of tip/amount of total bills × 100%
Input the number to the formula above
percentage = 17.67/110.42 × 100 %
percentage = (17.67 × 100 / 110.42) %
percentage = (1,767/110.42) %
percentage = 16.002%
percentage = 16%
The nearest percentage is 16%