Percent Word Problems II

Front

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

Back

To calculate a percentage of a number, use the formula: (Percentage / 100) * Total Number.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100.

Front

What is 15% of 30?

Back

4.5

Front

What is 20% of 800?

Back

160

Front

In a class of 25 students, if 20% scored an A, how many students scored an A?

Back

5 students scored an A.

Front

How do you express 170% as a decimal?

Back

170% as a decimal is 1.7.

Front

How do you simplify the fraction for 20%?

Back

20% can be simplified to 1/5.

Front

What is the relationship between percentages, decimals, and fractions?

Back

Percentages can be converted to decimals by dividing by 100, and to fractions by placing the percentage over 100 and simplifying.

Front

If a product costs $50 and is on sale for 20% off, what is the sale price?

Back

The sale price is $40 (20% of $50 is $10, so $50 - $10 = $40).

Front

How do you find the percentage increase from 50 to 75?

Back

Percentage increase = ((New Value - Old Value) / Old Value) * 100 = ((75 - 50) / 50) * 100 = 50%.