a) 1⅕m : 4 = 3/5 b) 2½m : 4 = 5/6
Ob = 4a a) 1⅕m = 4a 1,20m = 4a /:4 0,3m = a b)2½m = 4a 2,5m = 4a /:4 0,625m = a