Question

The distance between two cities is 180 km. the distance was covered by a car at a rate of 50 km/h, by a bus at 45km/h, by a truck at 40 km/h, and by a bicycle at 25 km/h. how long did each take to travel the entire distance? Are speed and time directly proportional or inversely proportional? What is the constant of variation

Answer 1

Answer:

7.2 hrs

Step-by-step explanation:

Speed is Directly Proportional to the Distance when time is constant.

Speed is Inversely Proportional to the Time when Distance is constant.

Now coming to the first part of your Question.

Total Distance 180 Kilometer

Car is moving at the rate of 50km/hr = 180/50 = 3.6 hrs

Bus is moving at the rate of 45km/hr = 180/45 = 4 hrs

Truck is moving at the rate of 40km/hr = 180/40 = 4.5 hrs

Bus is moving at the rate of 25km/hr = 180/25 = 7.2 hrs