Usally a pool has 7.5 gallons. A gallon equals to 8.5( in weigth). 15 liters equals to 3.96258 In a gallon but in a square meter it equals to 1000 liters. I would say you estimate the 15 liters to a number that would calculate easier.
Your answer would be- 12.3 or a big number XD Hope this helps
The correct answer to this could be the liberal capitalism built on democratic beliefs. This ideology best corresponds to the "American Dream". Everyone is equal and everyone can achieve everything.
