Timmy is on a 2100 mile trip across the country. over the last 12 hours of driving timmy has traveled 720 miles. if he continues traveling at the same rate, how many more hours will it take him to complete his trip? a) 15 hours b) 23 hours c) 35 hoursd) 47 hours

B) 23 hours

Step-by-step explanation:

He already traveled 720 miles in 12 hours.

His average speed is (720 miles)/(12 hour) = 60 mph

The entire trip is 2100 miles. He already traveled 720 miles.

2100 miles - 720 miles = 1380 miles.

The time it takes to travel 1380 miles at 60 mph is:

(1380 miles)/(60 mph) = 23 hours

B) 23 hours

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.