Question 55·Easy·Percentages
What is of ?
For percent-of-a-number questions, first convert the percent to a decimal or simple fraction (for example, 15% = 0.15 or ), then multiply by the given number. On easier numbers, you can also use mental math: find 10% (move the decimal one place) and 5% (half of 10%), then add them to get 15%, but always remember that "of" means multiply, not subtract.
Hints
Translate the percent
Rewrite 15% as a fraction out of 100 or as a decimal before you calculate.
Use "of" correctly
In percent problems, the word "of" usually means multiplication. What should you multiply by 60?
Do the multiplication
Once you have 15% written as a decimal or fraction, multiply it by 60 to get the result.
Desmos Guide
Compute the percent with Desmos
In Desmos, type 0.15*60 (or (15/100)*60) into an expression line and read the numerical result that appears to see the value of of .
Step-by-step Explanation
Understand what 15% means
"15%" means 15 out of 100, or the fraction . You can also write this as the decimal .
Set up the multiplication
"15% of 60" means you multiply by .
Multiply to get the value
Now multiply:
So, of is , which matches choice B.