Question

The length of a room is three and half times its width.if the perimeter of the floor of the room is 90m,find the length and width of the room

Answer 1

answer is 30 m because perimeter is 90=2(l+b). l=3*1/2b substitute it in l...hence it becomes 90=2(3*1/2b + b).....45 = (3*1/2)b +b......let move 3*1/2 to that side..therfore 30=2b....if 30 = 2b then 90-2b=2l....hence l=(90-30)/2....[l=30]

Answer 2

Answer:

length 35 and breadth 10