What is the answer? Thank you!

(The first example is shown in the picture)

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction

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