Ntoine and Tess have a disagreement over how to compute a 15% gratuity on $46.00. Tess says, "It is easy to find 10% of 46 by moving the decimal point one place to the left to get $4.60. Do that twice. Then add the two amounts to get $4.60 + $4.60 = $9.20 for the 15% gratuity." How should Antoine respond to Tess's method?

Answer:Ntoine and Tess have a disagreement over how to compute a 15% gratuity on $46.00. This in real becomes :[tex]0.15\times46=6.90[/tex] dollarsBut, Tess  says, "It is easy to find 10% of 46 by moving the decimal point one place to the left to get $4.60. Do that twice. Then add the two amounts to get $4.60 + $4.60 = $9.20 So, Tess is wrong. Rather she should have done 10% of $46 giving $4.6 and then half of 4.6 that is 2.3 dollars. Getting a total of [tex]4.6+2.3=6.9[/tex] dollars which is the real amount.