Part Over Whole Equals Percent Over 100

Front

What does 'Part Over Whole Equals Percent Over 100' mean?

Back

It is a mathematical principle that states the ratio of a part to the whole is equal to the ratio of the percentage to 100.

Front

How do you calculate the number of correct answers if you know the percentage and total questions?

Back

Multiply the total number of questions by the percentage (as a decimal). For example, for 80% of 30 questions: 30 * 0.80 = 24 correct answers.

Front

What is the decimal equivalent of a percentage?

Back

To convert a percentage to a decimal, divide by 100. For example, 3.5% = 3.5 / 100 = 0.035.

Front

How do you find the total number of people if you know the percentage and the part?

Back

Divide the part by the percentage (as a decimal). For example, if 40% of attendees ordered steak and 160 people did, the total is 160 / 0.40 = 400.

Front

What is 0.81% as a decimal?

Back

0.81% = 0.81 / 100 = 0.0081.

Front

How do you calculate a percentage increase?

Back

To calculate a percentage increase, multiply the original amount by the percentage increase (as a decimal) and add it to the original amount.

Front

If Karmin made $480 for 30 hours, what is her hourly rate?

Back

Her hourly rate is $480 / 30 = $16 per hour.

Front

What is 15% of $16?

Back

15% of $16 = 0.15 * 16 = $2.40.

Front

How do you find the new hourly rate after a raise?

Back

Add the increase to the original hourly rate. For example, $16 + $2.40 = $18.40.

Front

What is the formula to find the percentage of a number?

Back

Percentage = (Part / Whole) * 100.