Alejandra's fish tank hold 10 Liters of water. Every day her cat drinks 0.2 Liters of water from the tank when she away from home. The fish will get sick if the water drops below 4 Liters of water. Alejandra wants to know how many days she can go before having to refill the missing water. Write and solve an inequality that represents this situation. Explain clearly what the solution to the inequality means in the context of this situation.