What's 80 over 100 subtracted by 20 over 100 in its simplest form

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

don't report but were is the digram

step-by-step explanation: