A high-speed train travels 480 km from Paris to Grenoble, France, at an average speed of 180 km/h. How long will it take to reach Grenoble?

A. 0.66 h

B. 3.8 h

C. 0.38 h

D. 2.7 h

The time (t) it will take for the train to reach to Grenoble is the quotient when the distance (d) is divided by the speed (s). That is,

t = d / s

Substituting the known values,

t = 480 km / 180 km/h

t = 2.667 h

Thus, it will take approximately 2.7 h to reach Grenoble. The answer is letter D.