What's a 30% Tip on a $15 Bill?

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Bill
$
Tip
%
Split? ways
Bill: $15.00
Tip: $4.50
Total: $19.50
North American Tipping Guide
Restaurant
15-20% of the bill, including drinks.
Taxi
10% unless their credit card machine is "broken", then no tip.
Uber
It is now possible to tip using the app. Most people don't tip, so a small tip would be very appreciated.
Hair Salon
15-20%
Pizza
A few dollars
Room Service
A few dollars
Hotel Maid
$2 per day, or more if your room is messy. These are some of the lowest-paid employees, so tipping is a very nice gesture.
Tour Guide
If you really enjoyed the tour, then tip 5 or 10 dollars for your entire party.
How much? What is a 30 percent tip by bill amount? What should I tip if I want to leave 30? What's the total?
30% tip on $15.00 = 4.50 30% tip on $15.25 = 4.58 30% tip on $15.50 = 4.65 30% tip on $15.75 = 4.73
30% tip on $15.01 = 4.50 30% tip on $15.26 = 4.58 30% tip on $15.51 = 4.65 30% tip on $15.76 = 4.73
30% tip on $15.02 = 4.51 30% tip on $15.27 = 4.58 30% tip on $15.52 = 4.66 30% tip on $15.77 = 4.73
30% tip on $15.03 = 4.51 30% tip on $15.28 = 4.58 30% tip on $15.53 = 4.66 30% tip on $15.78 = 4.73
30% tip on $15.04 = 4.51 30% tip on $15.29 = 4.59 30% tip on $15.54 = 4.66 30% tip on $15.79 = 4.74
30% tip on $15.05 = 4.52 30% tip on $15.30 = 4.59 30% tip on $15.55 = 4.67 30% tip on $15.80 = 4.74
30% tip on $15.06 = 4.52 30% tip on $15.31 = 4.59 30% tip on $15.56 = 4.67 30% tip on $15.81 = 4.74
30% tip on $15.07 = 4.52 30% tip on $15.32 = 4.60 30% tip on $15.57 = 4.67 30% tip on $15.82 = 4.75
30% tip on $15.08 = 4.52 30% tip on $15.33 = 4.60 30% tip on $15.58 = 4.67 30% tip on $15.83 = 4.75
30% tip on $15.09 = 4.53 30% tip on $15.34 = 4.60 30% tip on $15.59 = 4.68 30% tip on $15.84 = 4.75
30% tip on $15.10 = 4.53 30% tip on $15.35 = 4.61 30% tip on $15.60 = 4.68 30% tip on $15.85 = 4.76
30% tip on $15.11 = 4.53 30% tip on $15.36 = 4.61 30% tip on $15.61 = 4.68 30% tip on $15.86 = 4.76
30% tip on $15.12 = 4.54 30% tip on $15.37 = 4.61 30% tip on $15.62 = 4.69 30% tip on $15.87 = 4.76
30% tip on $15.13 = 4.54 30% tip on $15.38 = 4.61 30% tip on $15.63 = 4.69 30% tip on $15.88 = 4.76
30% tip on $15.14 = 4.54 30% tip on $15.39 = 4.62 30% tip on $15.64 = 4.69 30% tip on $15.89 = 4.77
30% tip on $15.15 = 4.55 30% tip on $15.40 = 4.62 30% tip on $15.65 = 4.70 30% tip on $15.90 = 4.77
30% tip on $15.16 = 4.55 30% tip on $15.41 = 4.62 30% tip on $15.66 = 4.70 30% tip on $15.91 = 4.77
30% tip on $15.17 = 4.55 30% tip on $15.42 = 4.63 30% tip on $15.67 = 4.70 30% tip on $15.92 = 4.78
30% tip on $15.18 = 4.55 30% tip on $15.43 = 4.63 30% tip on $15.68 = 4.70 30% tip on $15.93 = 4.78
30% tip on $15.19 = 4.56 30% tip on $15.44 = 4.63 30% tip on $15.69 = 4.71 30% tip on $15.94 = 4.78
30% tip on $15.20 = 4.56 30% tip on $15.45 = 4.64 30% tip on $15.70 = 4.71 30% tip on $15.95 = 4.79
30% tip on $15.21 = 4.56 30% tip on $15.46 = 4.64 30% tip on $15.71 = 4.71 30% tip on $15.96 = 4.79
30% tip on $15.22 = 4.57 30% tip on $15.47 = 4.64 30% tip on $15.72 = 4.72 30% tip on $15.97 = 4.79
30% tip on $15.23 = 4.57 30% tip on $15.48 = 4.64 30% tip on $15.73 = 4.72 30% tip on $15.98 = 4.79
30% tip on $15.24 = 4.57 30% tip on $15.49 = 4.65 30% tip on $15.74 = 4.72 30% tip on $15.99 = 4.80