2007-09-08 07:59:30 · 4 answers · asked by Shepard S 1 in Science & Mathematics ➔ Mathematics
W is width
L is length = 1.3 W
2W + 2.6 W = 31
4.6 W = 31
W = 31 / 4.6
W = 6.74 m (to 2 decimal places)
L = 8.76 m (to 2 decimal places)
2007-09-12 06:42:55 · answer #1 · answered by Como 7 · 1⤊ 0⤋
Let x = width, 1.3x = length
Find width:
2(x + 1.3x) = 31
2 * 2.3x = 31
4.6x = 31
x = 31/4.6 or 155/23 or 6 17/23
Find length:
= 155/23 * 1 3/10
= 403/46 or 8 35/46
Answer:
2007-09-12 12:09:32 · answer #2 · answered by Jun Agruda 7 · 3⤊ 1⤋
Let the width of the room be w meter
Therefore,the length of the room is 1.3w meter
According to the problem,
2(w+1.3w)=31
2(2.3w)=31
2.3w=31/2=15.5
w=15.5/2.3=6.74 meter
Width of the room=6.74 m
Length of the room=1.3*6.74=8.76 m
2007-09-08 22:11:47 · answer #3 · answered by alpha 7 · 0⤊ 0⤋
let breadth=x
so length=1.3x
2(l+b)=31
2*2.3x=31
x=......
2007-09-08 15:05:42 · answer #4 · answered by bookwormanu 2 · 0⤊ 0⤋