Convert to find the equivalent rate. \[ \frac{240 \text { millimeters }}{\text { second }}=\square \frac{\text { centimeters }}{\text { minute }} \]

Step 1 ：Convert millimeters to centimeters. We know that 1 centimeter is equal to 10 millimeters. So, we divide 240 by 10 to get the equivalent in centimeters: \(240 \times 0.1 = 24 \) centimeters per second.

Step 2 ：Next, convert seconds to minutes. We know that 1 minute is equal to 60 seconds. So, we multiply the result from the first step by 60 to get the equivalent in centimeters per minute: \(24 \times 60 = 1440 \) centimeters per minute.

Step 3 ：Final Answer: The equivalent rate is \(\boxed{1440}\) centimeters per minute.