The outside dimensions of a living room are 13' 0" x 22' 0". if the wall thickness is 5 1/8" , what are the inside dimensions of the living room?
a. 12' 71/8" x 21' 71/8"
b. 12' 67/8" x 21' 67/8"
c. 12' 13/4" x 21' 13/4"
d. 7' 101/2" x 16' 101/2"

answer: 180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

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

sites:

17.08

correct me if i am wrong.