Question

the length of rectangle is 6 m less than three times its breadth. if perimeter is 148m. find length and breadth of rectangle

Answer 1

Well, take the breadth as b. Then the length would be 3b-6. Then, you can get the values in 2 (l+b). And you'll get, 8b-12 Then you can form the equation 8b-12=148 And, so from the above equation b= 20m and length will be 54m

Answer 2

let the breadth be b
then length=3b-6
atq
2(3b-6+b)=148
2(4b-6)=148
8b-12=148
8b=160
b=160/8
b=20
l=3b-6
=60-6
=54