What's a 20% Tip on a $9 Bill?

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Bill
$
Tip
%
Split? ways
Bill: $9.00
Tip: $1.80
Total: $10.80
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 20 percent tip by bill amount? What should I tip if I want to leave 20? What's the total?
20% tip on $9.00 = 1.80 20% tip on $9.25 = 1.85 20% tip on $9.50 = 1.90 20% tip on $9.75 = 1.95
20% tip on $9.01 = 1.80 20% tip on $9.26 = 1.85 20% tip on $9.51 = 1.90 20% tip on $9.76 = 1.95
20% tip on $9.02 = 1.80 20% tip on $9.27 = 1.85 20% tip on $9.52 = 1.90 20% tip on $9.77 = 1.95
20% tip on $9.03 = 1.81 20% tip on $9.28 = 1.86 20% tip on $9.53 = 1.91 20% tip on $9.78 = 1.96
20% tip on $9.04 = 1.81 20% tip on $9.29 = 1.86 20% tip on $9.54 = 1.91 20% tip on $9.79 = 1.96
20% tip on $9.05 = 1.81 20% tip on $9.30 = 1.86 20% tip on $9.55 = 1.91 20% tip on $9.80 = 1.96
20% tip on $9.06 = 1.81 20% tip on $9.31 = 1.86 20% tip on $9.56 = 1.91 20% tip on $9.81 = 1.96
20% tip on $9.07 = 1.81 20% tip on $9.32 = 1.86 20% tip on $9.57 = 1.91 20% tip on $9.82 = 1.96
20% tip on $9.08 = 1.82 20% tip on $9.33 = 1.87 20% tip on $9.58 = 1.92 20% tip on $9.83 = 1.97
20% tip on $9.09 = 1.82 20% tip on $9.34 = 1.87 20% tip on $9.59 = 1.92 20% tip on $9.84 = 1.97
20% tip on $9.10 = 1.82 20% tip on $9.35 = 1.87 20% tip on $9.60 = 1.92 20% tip on $9.85 = 1.97
20% tip on $9.11 = 1.82 20% tip on $9.36 = 1.87 20% tip on $9.61 = 1.92 20% tip on $9.86 = 1.97
20% tip on $9.12 = 1.82 20% tip on $9.37 = 1.87 20% tip on $9.62 = 1.92 20% tip on $9.87 = 1.97
20% tip on $9.13 = 1.83 20% tip on $9.38 = 1.88 20% tip on $9.63 = 1.93 20% tip on $9.88 = 1.98
20% tip on $9.14 = 1.83 20% tip on $9.39 = 1.88 20% tip on $9.64 = 1.93 20% tip on $9.89 = 1.98
20% tip on $9.15 = 1.83 20% tip on $9.40 = 1.88 20% tip on $9.65 = 1.93 20% tip on $9.90 = 1.98
20% tip on $9.16 = 1.83 20% tip on $9.41 = 1.88 20% tip on $9.66 = 1.93 20% tip on $9.91 = 1.98
20% tip on $9.17 = 1.83 20% tip on $9.42 = 1.88 20% tip on $9.67 = 1.93 20% tip on $9.92 = 1.98
20% tip on $9.18 = 1.84 20% tip on $9.43 = 1.89 20% tip on $9.68 = 1.94 20% tip on $9.93 = 1.99
20% tip on $9.19 = 1.84 20% tip on $9.44 = 1.89 20% tip on $9.69 = 1.94 20% tip on $9.94 = 1.99
20% tip on $9.20 = 1.84 20% tip on $9.45 = 1.89 20% tip on $9.70 = 1.94 20% tip on $9.95 = 1.99
20% tip on $9.21 = 1.84 20% tip on $9.46 = 1.89 20% tip on $9.71 = 1.94 20% tip on $9.96 = 1.99
20% tip on $9.22 = 1.84 20% tip on $9.47 = 1.89 20% tip on $9.72 = 1.94 20% tip on $9.97 = 1.99
20% tip on $9.23 = 1.85 20% tip on $9.48 = 1.90 20% tip on $9.73 = 1.95 20% tip on $9.98 = 2.00
20% tip on $9.24 = 1.85 20% tip on $9.49 = 1.90 20% tip on $9.74 = 1.95 20% tip on $9.99 = 2.00