Answer:
The tip was 20.6% or 20.59% of the original bill
Explanation:
Question: The bill for dinner was $77.12. You left $15.88 for the tip. What percentage of the original bill was the tip?
Step-by-step:
To find the percentage of how much a part ($15.88) is or a whole ($77.12), the formula of part = percentage * whole is used.
It is usually written as a = p*w
In this case, $15.88 is a and $77.12 is w.
so, 15.88 = p*77.12
However, we need to find p. To do so, we need to get p by itself. Divide 77.12 on both sides so that it cancels out on the right side.
15.88 divided by 77.12 is about 0.2059
We need to make the decimal a percentage by multiplying 100
0.2059 * 100 = 20.59%
You could probably round it up to 20.6% if you wanted to
Therefore, the tip was 20.6% or 20.59% of the original bill.