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
distance by time.

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

Answer 1

To determine which turtle has the fastest speed, we need to calculate the speed of each turtle using the formula:

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

1. **Bianca:**
- Distance = 21 centimeters
- Time = 7 minutes
- Speed = \(\frac{21}{7} = 3\) centimeters per minute

2. **Michelle:**
- Distance = 24 centimeters
- Time = 4 minutes
- Speed = \(\frac{24}{4} = 6\) centimeters per minute

3. **Sierra:**
- Distance = 18 centimeters
- Time = 6 minutes
- Speed = \(\frac{18}{6} = 3\) centimeters per minute

Now, we compare the speeds:
- Bianca: 3 cm/min
- Michelle: 6 cm/min
- Sierra: 3 cm/min

**Michelle** has the fastest speed.

The speed of the fastest turtle (Michelle) is **6 centimeters per minute.**