Dinner at your favorite restaurant cost $64.50 with tax for you and your family. You give the waiter $75 to pay the bill and a tip. What is the approximate percentage of the tip?

20%

Step-by-step explanation:

move decimal multiply by 2

Answer: 16%

Step-by-step explanation:

Cost of the dinner including taxes = $64.50

Amount paid by you = $75

So, the tip given to the waiter = 75 - 64.50 = 10.50

Now,

We need to find out the percentage of the tip paid on the bill.

i. e., How much percent of 64.50 is 10.50

64.50 - - - 10.50

100 - --?

Cross multiplying;

(100 x 10.50) / 64.50

= 16.27% ~ 16%