Calculating the Speed

Question

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.

Answer 1

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.