Length of a back yard is 22 meters. That is 20 meters less than 3.5 times the width of the yard. How wide is the backyard

Let width be X.

According to the question:

3.5X-20=22

3.5X=42

X=42/3.5

X=12

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