Answer :
6 3/8 YOU CAN WRITE AS 51/8,
7 2/5 YOU CAN WRITE AS 37/5
51/8+ 37/5= (255+296)/40=551/40
551/40= 13 31/40 KG
7 2/5 YOU CAN WRITE AS 37/5
51/8+ 37/5= (255+296)/40=551/40
551/40= 13 31/40 KG