Accusative v. Dative

[Lukas]

Hello:

Another spot I am having trouble is placing something in the accusative or dative case:
Unit 9, Part III, #7: Because of their wealth the rich are permitted to flee difficult tasks.

I wrote:
δια τον πλουτον εξεστι τους πλουσιους χαλεπα εργα πεθειν.

But the answer book placed "rich" in the dative:
δια τον πλουτον εξεστι τοις πλουσιοις χαλεπα εργα πεθειν.

I cannot figure out when to use accusative and when to use dative.

Lukas

[Barry Hofstetter]

With ἔξεστι, the person(s) permitted to do the action in the infinitive go into the dative.

And shouldn't it be φυγεῖν (or φεύγειν if you haven't had aorist yet).

[Lukas]

Oops. I used the wrong verb.

Thank you for clarifying. I was not able to determine from the book that I needed to use date with εξεστι. I may have read the section wrong.

Lukas