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Calculating the Speed

Bianca walked 21 centimeters in 7 minutes. Michelle walked 24 centimeters in 4 minutes. Sierra walked 18 centimeters in 6 centimeters.

Which turtle has the fastest speed?

The speed of a turtle can be found by
dividing
distance by time.

is the fastest turtle.
The speed of the fastest turtle is
centimeters per minute.

1 answer

To find out which turtle has the fastest speed, we will calculate the speed of each turtle using the formula:

\[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \]

Let's calculate the speed for each turtle:

  1. Bianca:

    • Distance = 21 centimeters
    • Time = 7 minutes \[ \text{Speed} = \frac{21 \text{ cm}}{7 \text{ min}} = 3 \text{ cm/min} \]

  2. Michelle:

    • Distance = 24 centimeters
    • Time = 4 minutes \[ \text{Speed} = \frac{24 \text{ cm}}{4 \text{ min}} = 6 \text{ cm/min} \]

  3. Sierra:

    • Distance = 18 centimeters
    • Time = 6 minutes \[ \text{Speed} = \frac{18 \text{ cm}}{6 \text{ min}} = 3 \text{ cm/min} \]

Now, summarizing the speeds:

  • Bianca: 3 cm/min
  • Michelle: 6 cm/min
  • Sierra: 3 cm/min

From these calculations, Michelle is the fastest turtle.

The speed of the fastest turtle is 6 centimeters per minute.

So, the final answers are:

  • Michelle is the fastest turtle.
  • The speed of the fastest turtle is 6 centimeters per minute.