Brian is finishing a meal at his favorite restaurant. the check shows that the cost of the food is $42. he adds a 15% tip to the amount on the check. what is the total amount brian paid? write your answer up to two decimal places.

48.30        you move the decimal point back (to the left) to get 10 percent then since 5 is half of 10 to get the rest of the 15 percent you take half of ten percent witch is 5 and add the 10 and 5 percent to get the total 15 percent witch is 6.30 then add 6.30 for a total of what he paid

42 x 0.15= 6.30 for the tip
$42 + 6.30 tip= $48.30

21 is the answer the answer is 21