Study the graph and answer the following questions. The graph shows the number of bicycles parked in the parking space of a hall at various points of time.
What is the percentage decrease in the number of parked cycles between 7 pm and 8 pm? (in whole number)
An old man starts his daily walking routine. He walks 2 km East, then turns North and walks 1 km, then turns West and walks 2 km, then turns to his right and walks 1.5 kms. Where is he now with respect to the starting position?