Question 389747
Let the width be w and the length be 3+w. The perimeter is 34, so


2(w + (3+w)) = 34. The left-hand side simplifies to 2(3 + 2w) so


2(3 + 2w) = 34


3 + 2w = 17


w = 7, 3+w = 10 --> Length = 10


Checking, 2(7 + 10) = 34