mr ferry owns a cow, a horse, and a goat.
cow eats 2 1/2 kilograms of grass per day
horse eats 1 1/2 kilo of grass per day
goat eats 3/4 kilo of grass per day

how many kilo of grass should mr ferry buy to feed his 3 animals for 30 days.

if grass costs 125.50 per kilogram. how much will the 30 day supply of grass cost?​