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PercentagesArithmeticMiddle schoolabout 0:26

25% of what is 40?: animated lesson

A narrated, step-by-step percentages video lesson with captions. Final answer: 160.

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
40 is 25% of what number?
2. Step by step
1. $25\% = 0.25$
  Convert the percent to a decimal
2. $\frac{40}{0.25} = 160$
  Divide the part by the decimal
3. The answer
$160$
40 ÷ 0.25 = 160
4. Check
- Check: 25% of 160 = 40

Transcript

The problem. Here is the problem: 40 is 25 percent of what number? Find the whole when a part and its percentage are known.

Step by step. Convert the percent to a decimal. Divide the part by the decimal.

The answer. So the answer is 160. If 40 is 25 percent of a number, that number is 160.

Check. Check: 25 percent of 160 equals 40.

About percentages

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

25% of what is 40?: Percentages Step-by-Step Lesson