Respuesta :

Take it and divide it by 5, or you can multiply it by 2.
apologiabiology
10 times 2=20
so find 10% of the bill and double it

10% is easy because it is 1/10
just move decimal place over 1 palce

example
20% of 34.30
10% is 3.43
20% is double that or 6.86

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