Question

a car traveling at a constant speed goes 150km in 7200s. what is the speed of the car?

Answer 1

Use this formula: distance = rate x time 
so, distance=150km     time= 7200 seconds which equals 2 hr     rate= unknown
150= rate x 2 or 150= 2r
Now, rate= 150 divide by 2; therefore rate= 75 km/hr
the answer is the car travels 75 km per hr