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Word problemsArithmeticMiddle schoolabout 1:27

Simple interest on $2500 at 4% for 5 years: animated lesson

A narrated, step-by-step word problems video lesson with captions. Final answer: Interest earned = 500.

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 (0.5 MB) · Captions (WebVTT)

Steps on screen

  1. 1. The problem
    Worked example
    Simple interest on 2500 at 4% for 5 years
  2. 2. Steps, part 1
    1. Read the problem
    2. Identify the known values
    3. I=P⋅r100tI = P\cdot\frac{r}{100} t
      Write the equation
    4. Solve for I
  3. 3. Steps, part 2
    1. Result
  4. 4. The answer
    Interest earned = 500\text{Interest earned = 500}

    I = 500

  5. 5. Check
    • Substituting I = 500 back into I = P · (r/100) · t balances both sides ✓

Transcript

The problem. Here is the problem: Simple interest on 2500 at 4 percent for 5 years. Principal 2500, simple interest at 4 percent per year for 5 years; the interest is unknown. Simple interest; P equals 2500, r equals 4 percent, t equals 5; solve for I.

Steps, part 1. Read the problem. Principal 2500, simple interest at 4 percent per year for 5 years; the interest is unknown. Identify the known values. Simple interest. Known: P equals 2500, r equals 4 percent, t equals 5. Unknown: interest earned (I). Write the equation. I equals P times (r/100) times t. Solve for I. I equals 2500 times 0.04 times 5.

Steps, part 2. Result. I equals 500.

The answer. So the answer is Interest earned equals 500. Substitute the known values into I equals P times (r/100) times t and isolate I. Keep units consistent (for example miles, miles per hour and hours).

Check. Substituting I equals 500 back into I equals P times (r/100) times t balances both sides, which checks out.

About word problems

Turn everyday situations about prices, speed, ages and interest into equations and solve them.

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Simple interest on $2500 at 4% for 5 years: Animated Lesson