Question

The length of a rectangle is 7m.more than its breadth.if the perimeter is 74 m.find its breadth

Answer 1

let the breadth be x m
then the length is x+7m
then perimeter 2(x+x+7)m
2(2x+7)m
4x+14m= 74 m
4x=60 m
x=15 m
then it's breadth is 15 m

Answer 2

Here is your solution

Let ,

let Breadth be x

lengh =x+7

now

perimeter of rectangle = 2 (l+b)

74= 2 (x+7+x)
74= 2 (2x+7)
37=2x+7
30=2x
15=x

hence

breadth of rectangle =x= 15m