3. A race car travels around a circular track that is 12.5 km in circumference. If the average speed of the car is 112m/s how long will it take to complete one lap? (3)

Here's how to solve this problem:<br /><br />1. **Convert the circumference to meters:** Since the speed is given in meters per second, we need the distance in meters. 1 km = 1000 m, so 125 km * 1000 m/km = 125,000 m<br /><br />2. **Use the formula: time = distance / speed**<br /><br />3. **Calculate the time:** time = 125,000 m / 112 m/s = 1116.07 seconds<br /><br />4. **(Optional) Convert to minutes and seconds:** 1116.07 seconds is equal to approximately 18 minutes and 36 seconds.<br /><br />**Answer:** It will take approximately 1116.07 seconds (or about 18 minutes and 36 seconds) to complete one lap.<br />