Question

the length of a rectangular hall is 4 meter less than 3 times the breadth of the hall. what is the length, if the breadth is b meter

Answer 1

The breadth of the rectangular hall is b meter.
So, let length is x meter.
According to the question,
x = (3×b) -4
x = 3b-4
so, the length of the rectangular hall is 3b-4 meter.