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If you are charging 5 per hour use h to determine how many hours and add 10 for the connection fee
5h+10
As a fraction is 345 over 10000 and in simplest form divide both by 5
that 69 over 2000. As percentage move two decimal place to the right, so it is %34.5
12 of them are black
2 of them is yellow
2 of them are both
