Which is a unit rate?
a. 1/7
b. 48/4
c. 34/1
d. 40/5

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