What is the average speed of 600 meters and 40 seconds

Step-by-step explanation:

aver speed = distance / time

                   = 600 meters

                      40 seconds

                    = 15 meters per second

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540