Q:

A person covered some distance at some speed. If he traveled a distance of 3 km / h more, it took him 40 minutes less time. If he had covered the distance at a speed of 2 km / h less, he would have taken 40 minutes more. The distance (in km) is

• 1
  20
• 2
  35
• 3
  $$ {36{2\over3}}$$
• 4
  40