Help me please I’m confused

so basically just solve all the equations by the letters and the answers will be the letters so like you would do 20 divided by 4 and the answer would be 5 so anything that is 5 down below would be F

Step-by-step explanation:

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