The length of a rectangular field is 7/5 its width. If the perimeter of the field is 288 meters, what is the width of the field? Options:
A) 50	B) 60	C) 70	D) 80	E) 90

Rationale: let l be the length and w be the width . l = ( 7 / 5 ) w perimeter : 2 l + 2 w = 288 , 2 ( 7 / 5 ) w + 2 w = 288 solve the above equation to find : w = 60 m and l = 84 m . correct answer b ) 60
Answer: B