Percents and percent problems

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate percent increase?

Back

Percent increase = ((New Value - Original Value) / Original Value) x 100.

Front

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

Back

Percentage of a number = (Percentage / 100) x Total Number.

Front

If 30% of 60 students prefer dogs, how do you find the number of students?

Back

Number of students = (30 / 100) x 60 = 18.

Front

What is markup in terms of selling price?

Back

Markup is the amount added to the cost price of goods to cover overhead and profit.

Front

How do you calculate the markup percentage?

Back

Markup Percentage = ((Selling Price - Cost Price) / Cost Price) x 100.

Front

What does simple interest mean?

Back

Simple interest is calculated on the principal amount only, not on the interest accrued.

Front

How do you calculate simple interest?

Back

Simple Interest = Principal x Rate x Time.

Front

What is the original price of an item if it is on sale for 20% off?

Back

Original Price = Sale Price / (1 - Discount Rate).

Front

If an item costs $25 and is 10% off, what is the sale price?

Back

Sale Price = $25 - (10/100) x $25 = $22.50.