7R Percent Review-Flashcard #4

Front

What is percent change?

Back

Percent change is a measure of how much a quantity has increased or decreased relative to its original value, expressed as a percentage.

Front

How do you calculate percent change?

Back

Percent Change = ((New Value - Old Value) / Old Value) x 100.

Front

If a class has 35 students and increases to 42, what is the percent change?

Back

20%.

Front

What does 40% of a number mean?

Back

It means 40 out of every 100 parts of that number.

Front

If Chris read 6 books and that is 40% of the total books he read last year, how do you find the total?

Back

Total Books = 6 / 0.40 = 15.

Front

What is a tip in a restaurant context?

Back

A tip is a small amount of money given to service workers for their service, often calculated as a percentage of the total bill.

Front

How do you calculate a 10% tip on a $23.77 dinner?

Back

Tip = 0.10 x 23.77 = $2.38; Total Cost = $23.77 + $2.38 = $26.15.

Front

What is the formula to find the total cost including tax?

Back

Total Cost = Price + (Price x Tax Rate).

Front

If a TV costs $899 and the tax rate is 6.5%, how much tax do you pay?

Back

Tax = 899 x 0.065 = $58.44.

Front

What is the percent of a whole?

Back

Percent of a whole is a way to express a number as a fraction of 100.