An only son inherited a 3/4 hectare lot. He decided to build a 40-door condominium on the lot. The floor are of the units is uniform and the total floor area of the entire condominium is 1/5 less than the area of the lot to provide for certain amenities. What is the floor area of each condominium unit?
1 answer
3/4 * 4/5 * 1/40 = 3/200 hectare