Mick paid $2.94 in sales tax on an item that cost $42.00 before tax. at that rate how much would he pay for an item that cost $58.00before tax

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