Question

Suppose a driver with car leaves home at 8AM and first travels 30 km/hr for two hours, then stops one hour for coffee. He then travels at 80 km/hr for the next five hours, to arrive at the destination. (we imagine a magical car that does not need to accelerate or decelerate):

1. How many hours was this trip, from start to finish?

Answer 1

The total duration of the trip, including driving time and a coffee break, is 8 hours. This includes 2 hours of driving at 30 km/hr, a 1-hour coffee break, and 5 hours of driving at 80 km/hr.

Step-by-step explanation:

To calculate the overall time of this road trip, we need to add the time spent driving at each speed, along with the duration of the stop for coffee. The driver travels at 30 km/hr for two hours, stops for one hour for coffee, and then drives at 80 km/hr for five hours.

Calculation steps:

• Duration of driving at 30 km/hr: 2 hours
• Duration of coffee break: 1 hour
• Duration of driving at 80 km/hr: 5 hours

Adding these times together:

2 hours + 1 hour + 5 hours = 8 hours

Therefore, the total duration of the trip, from the time the driver left home until the time of arrival at the destination, is 8 hours.