Direct & Inverse Proportions

Meenakshee cycles to her school at an average speed of 12 km/h
and takes 20 minutes to reach her school. If she wants to reach her
school in 12 minutes, her average speed should be

(a) 20/3 km/h (b) 16 km/h(c) 20 km/h (d) 15 km/h