Question

The perimeter of a rectangle is 40 cm. The length of the rectangle is less than

double its breadth by 1 cm. Find the length and breadth.

Length = 17 cm and Breadth = 8 cm

Length = 13 cm and Breadth = 7 cm

Length = 14 cm and Breadth = 6 cm

Length = 15 and Breadth = 8 cm​

Answer 1

Answer:

option B

Step-by-step explanation:

just convert sentence into an equation

l=2b+1

therefore l=13

b=7

Answer 2

✯solution ✯

perimeter of the rectangle =40cm

formula for find the perimeter of the rectangle =2(l+b). {here l=length and b=breadth }

let breadth be x cm

length =2x-1

2(x+2x-1)=40

or,2(3x-1)=40

or,6x-2=40

or,6x=40+2(transposing 2 to RHS)

or,6x=42

or,x=42/6

or,x=7

breadth =7cm

therefore,length =2×7-1=14-1=13cm