Train travels 16km in 20 minutes. Speed?

To calculate speed, we use the formula: Speed = Distance / Time. The distance given is 16 km, and the time is 20 minutes. Since the desired speed unit is kilometers per hour (km/h), we must convert the time from minutes to hours.

There are 60 minutes in an hour, so 20 minutes = 20/60 hours = 1/3 hour. Now, substitute the values into the formula: Speed = 16 km / (1/3) hour = 16 * 3 km/h = 48 km/h. Therefore, option C is the correct answer.

• A, B, D: 43 km/h, 45 km/h, 52 km/h are incorrect. These results likely stem from errors in converting minutes to hours or incorrect arithmetic during the calculation. Forgetting to convert time to hours or using an incorrect conversion factor would lead to different incorrect speeds.