Answer:
meters of border required = 31.4 meter
Step-by-step explanation:
width/breadth of rectangular poster = 8 3/10 = 83/10 meters
length of rectangular poster = 7 2/5 = 37/5 meters
meters for border for the rectangular poster = perimeter of the poster
= 2 ( L+b)
= 2 ( 37/5 + 83/10 )
LCM = 10
= 2 ( 74/10 + 83/10 )
= 2 X 157/10
= 31.4 meter