the lenght of a room is two and half times is width .if the perimeter of the room is 70 m ,find lenght of the room ?
Answers
Answered by
1
HEY!!!!!
_________________
let the length and width of room be x and y respectively
so it is given that
x=2.5y
or x=5/2y or 2x=5y__________(1)
also ,
perimeter of a for rectangle is 2(x+y)
so 2(x+y)=70
or
x+y=35 _____________(2)
from (1)
x=2/5y
substituting in (2)
we get
2/5y+y=35
=(2y+5y)/5=35
=7y=5×35
y=25
from (2)
x=35-y
x=35-25=10
so
x=10 and y = 25
____________________
Thanks !!!
_________________
let the length and width of room be x and y respectively
so it is given that
x=2.5y
or x=5/2y or 2x=5y__________(1)
also ,
perimeter of a for rectangle is 2(x+y)
so 2(x+y)=70
or
x+y=35 _____________(2)
from (1)
x=2/5y
substituting in (2)
we get
2/5y+y=35
=(2y+5y)/5=35
=7y=5×35
y=25
from (2)
x=35-y
x=35-25=10
so
x=10 and y = 25
____________________
Thanks !!!
raviprakashmishra:
thanks
Answered by
0
2(l+b)=70
2(2×1/2+x)=70
2(5/2+x)=70
5/2+x=70/2
5/2+x=35
5+x=35×2
5+x=70
x=70-5= 65width
then
2 1/2=5/2
5/2×65=162.5
width is= 65 and lenth is 162.5
I think it's help you
2(2×1/2+x)=70
2(5/2+x)=70
5/2+x=70/2
5/2+x=35
5+x=35×2
5+x=70
x=70-5= 65width
then
2 1/2=5/2
5/2×65=162.5
width is= 65 and lenth is 162.5
I think it's help you
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