Question

A rectangle lenght is 1.25 times it width.its perimeter is 3 times the lenght plus one . what is the dimensional of rectangle

Answer 1

let the lenght of rectangle be x.
breadth be y.
given length= 1.25(breadth)
x=1.25(y)
perimeter=3(length)+1
2(x+y)=3x+1
2(1.25y+y)=3(1.25y)+1
2(2.25y)=3.75y+1
4.5y=3.75y+1
4.5y-3.75y=1
0.75y=1
y=1/0.75
y=4/3
breadth of rectangle is 4/3
length of rectangle is 1.25(4/3)=5/3