What is your speed if you move two feet per second?

2ft x 60 SECONDS = 120 ft

120ft x 60 minutes = 7200ft per hour

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