Can someone please tell me what this means?

Wie weiß sie, was sie alles braucht? & this one too: Wie weiß sie, was sie gekauft hat und wie wiel alles gekostet hat?

Correction, the second translation should be viel, not wiel..thanks!

How does she know what she needs.

How does she know what she has bought and how much it all has cost.

The phrases you provided are in German. To understand what they mean, you can use an online translator or follow these steps to break the sentences down:

1. Identify the keywords: "weiß" means "knows," "sie" means "she," "was" means "what," "alles" means "everything," "braucht" means "needs," "gekauft" means "bought," "hat" means "has," and "gekostet" means "cost."

2. Translate the sentence: "Wie weiß sie, was sie alles braucht?" translates to "How does she know what she needs?"

3. Translate the second sentence: "Wie weiß sie, was sie gekauft hat und wie viel alles gekostet hat?" translates to "How does she know what she bought and how much everything cost?"

By breaking down the sentences and using the translation, you can understand that both sentences are asking how someone knows what they need and what they have bought and how much everything cost.