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PercentagesArithmeticMiddle schoolabout 0:25

9 is what percent of 40?: animated lesson

A narrated, step-by-step percentages video lesson with captions. Final answer: 22.5%.

SpeedLanguage

Video with a synthetic English voice and captions. Pick another language for subtitles in that language, or open the interactive version.

Video narrated by a synthetic voice (Piper TTS, en_US-ljspeech-high voice (LJ Speech dataset, public domain)); the steps come from our maths engine and the answer was checked independently. Download MP4 (0.2 MB) · Captions (WebVTT)

Steps on screen

1. The problem
Working with percentages
9 is what percent of 40?
2. Step by step
1. $\frac{9}{40} = 0.225$
  Divide the part by the whole
2. $0.225 \times 100 = 22.5\%$
  Multiply by 100 to convert to a percent
3. The answer
$22.5\%$
9 ÷ 40 × 100 = 22.5%
4. Check
- Check: 22.5% of 40 = 9

Transcript

The problem. Here is the problem: 9 is what percent of 40? Express a part as a percentage of a whole.

Step by step. Divide the part by the whole. Multiply by 100 to convert to a percent.

The answer. So the answer is 22.5 percent. 9 is 22.5 percent of 40.

Check. Check: 22.5 percent of 40 equals 9.

About percentages

Percent of a number, what percent one number is of another, the whole from a part, and percent change.

9 is what percent of 40?: Percentages Step-by-Step Lesson