What's a 30% Tip on a $123 Bill?

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Bill
$
Tip
%
Split? ways
Bill: $123.00
Tip: $36.90
Total: $159.90
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 $123.00 = 36.90 30% tip on $123.25 = 36.98 30% tip on $123.50 = 37.05 30% tip on $123.75 = 37.13
30% tip on $123.01 = 36.90 30% tip on $123.26 = 36.98 30% tip on $123.51 = 37.05 30% tip on $123.76 = 37.13
30% tip on $123.02 = 36.91 30% tip on $123.27 = 36.98 30% tip on $123.52 = 37.06 30% tip on $123.77 = 37.13
30% tip on $123.03 = 36.91 30% tip on $123.28 = 36.98 30% tip on $123.53 = 37.06 30% tip on $123.78 = 37.13
30% tip on $123.04 = 36.91 30% tip on $123.29 = 36.99 30% tip on $123.54 = 37.06 30% tip on $123.79 = 37.14
30% tip on $123.05 = 36.92 30% tip on $123.30 = 36.99 30% tip on $123.55 = 37.07 30% tip on $123.80 = 37.14
30% tip on $123.06 = 36.92 30% tip on $123.31 = 36.99 30% tip on $123.56 = 37.07 30% tip on $123.81 = 37.14
30% tip on $123.07 = 36.92 30% tip on $123.32 = 37.00 30% tip on $123.57 = 37.07 30% tip on $123.82 = 37.15
30% tip on $123.08 = 36.92 30% tip on $123.33 = 37.00 30% tip on $123.58 = 37.07 30% tip on $123.83 = 37.15
30% tip on $123.09 = 36.93 30% tip on $123.34 = 37.00 30% tip on $123.59 = 37.08 30% tip on $123.84 = 37.15
30% tip on $123.10 = 36.93 30% tip on $123.35 = 37.01 30% tip on $123.60 = 37.08 30% tip on $123.85 = 37.16
30% tip on $123.11 = 36.93 30% tip on $123.36 = 37.01 30% tip on $123.61 = 37.08 30% tip on $123.86 = 37.16
30% tip on $123.12 = 36.94 30% tip on $123.37 = 37.01 30% tip on $123.62 = 37.09 30% tip on $123.87 = 37.16
30% tip on $123.13 = 36.94 30% tip on $123.38 = 37.01 30% tip on $123.63 = 37.09 30% tip on $123.88 = 37.16
30% tip on $123.14 = 36.94 30% tip on $123.39 = 37.02 30% tip on $123.64 = 37.09 30% tip on $123.89 = 37.17
30% tip on $123.15 = 36.95 30% tip on $123.40 = 37.02 30% tip on $123.65 = 37.10 30% tip on $123.90 = 37.17
30% tip on $123.16 = 36.95 30% tip on $123.41 = 37.02 30% tip on $123.66 = 37.10 30% tip on $123.91 = 37.17
30% tip on $123.17 = 36.95 30% tip on $123.42 = 37.03 30% tip on $123.67 = 37.10 30% tip on $123.92 = 37.18
30% tip on $123.18 = 36.95 30% tip on $123.43 = 37.03 30% tip on $123.68 = 37.10 30% tip on $123.93 = 37.18
30% tip on $123.19 = 36.96 30% tip on $123.44 = 37.03 30% tip on $123.69 = 37.11 30% tip on $123.94 = 37.18
30% tip on $123.20 = 36.96 30% tip on $123.45 = 37.04 30% tip on $123.70 = 37.11 30% tip on $123.95 = 37.19
30% tip on $123.21 = 36.96 30% tip on $123.46 = 37.04 30% tip on $123.71 = 37.11 30% tip on $123.96 = 37.19
30% tip on $123.22 = 36.97 30% tip on $123.47 = 37.04 30% tip on $123.72 = 37.12 30% tip on $123.97 = 37.19
30% tip on $123.23 = 36.97 30% tip on $123.48 = 37.04 30% tip on $123.73 = 37.12 30% tip on $123.98 = 37.19
30% tip on $123.24 = 36.97 30% tip on $123.49 = 37.05 30% tip on $123.74 = 37.12 30% tip on $123.99 = 37.20