Answer the following question in 3-4 complete sentences. A group of people stacked into a pyramid on a raft in the ocean. The person on top is waving a flag as if to signal a ship. Name the artist and painting above. How has the artist used space effectively?

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?