Math Problem Statement

A ceiling fan can rotate 150.59 times per minute. The fan rotated a total of 3,764.75 times. Which of the following is true? A. The fan rotated for 26 minutes. B. The fan rotated for 24 minutes. C. The fan rotated for 27 minutes. D. The fan rotated for 25 minutes.

Solution

To solve the problem, we determine how many minutes the fan rotated using the formula:

Minutes=Total RotationsRotations per Minute\text{Minutes} = \frac{\text{Total Rotations}}{\text{Rotations per Minute}}

Given:

  • Total Rotations = 3,764.753,764.75
  • Rotations per Minute = 150.59150.59

Now we calculate:

Minutes=3,764.75150.59\text{Minutes} = \frac{3,764.75}{150.59}

Performing the division:

Minutes=25(approximately, rounded to the nearest whole number).\text{Minutes} = 25 \, \text{(approximately, rounded to the nearest whole number)}.

Thus, the fan rotated for 25 minutes.

The correct answer is: D. The fan rotated for 25 minutes.

Would you like further details on the calculation? Here are some related questions for deeper understanding:


  1. How do you calculate the time for non-integer rotations per minute?
  2. What happens if the rotations per minute increase by 10%? How does it affect the total time?
  3. Can we express the rotations as a percentage of rotations per minute for a fraction of a minute?
  4. Why is it important to round appropriately in real-world problems like this one?
  5. If the fan rotates 1,000 more times, how much additional time would that add?

Tip: Always check units (e.g., minutes, rotations) to ensure your calculations are correct.

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Math Problem Analysis

Mathematical Concepts

Division
Unit Rate Calculation
Rounding

Formulas

Minutes = Total Rotations / Rotations per Minute

Theorems

Unit Rate Application

Suitable Grade Level

Grades 6-8