What is the distance to Gerry's office from home if he traveled for 30 minutes at an average speed of 40 km/h?

To find the distance from Gerry's home to his office, you can use the formula for distance, which is given by the equation:

Distance = Speed × Time

In this case, Gerry traveled for 30 minutes at an average speed of 40 km/h. It's essential to convert the time from minutes to hours because the speed is in kilometers per hour. Since there are 60 minutes in an hour, 30 minutes is equivalent to 0.5 hours.

Now, substituting the known values into the formula:

Distance = 40 km/h × 0.5 h

Distance = 20 km

Thus, Gerry's office is 20 km away from his home. This calculation supports the choice of 20 km as the correct answer.