Question

The length of a postcard is 2cm less than 3 times its breadth. What is the length if the breadth is b cm​

Answer 1

Step-by-step explanation:

=lcm

breadth of rectangle= bcm

Given length is 3 times its breadth

i.e. l= 3×b

Perimeter of the rectangle= 120 cm

i.e.2×( l+ b)=120

2×(3×b+ b)=120

2×(4×b)=120

8×b=120

b= 15 cm

Answer 2

Answer:

8×b= 120cm

hence, b= 15 cm