Mathematics · Speed, Time and Distance

Rajeev started moving from a place at 1:00 p.m. at a speed of 18 km/h. After travelling for 2 hours, he rang up his friend who was ready to move from his starting place, to help Rajeev and requested the friend for immediate departure to help him. The friend starts moving from the same point at 3 p.m. and meets Rajeev, who was also moving, at 9 p.m. the same day. Find the speed of the friend.