Question

55. The length of a rectangle is 7/5 of its breadth. If its perimeter is 48 cm, 48 cm, then what is its length?
​

Answer 1

Answer:

let breadth = x

then length = 7x/5

now perimeter = 48

2(l+b)=48

l+b =48/2=24

7x/5+x= 24

LCM =5

(7x+5x)/5=24/1

12x =5×24 by cross multiplication

x= 5×2=10 cm

length =7×10/5=14cm