Respuesta :
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
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