Question

آخه تا کی می خوای ادامه بدی؟

Answer 1

How long more do you want to continue?

Comments

what about how much more?

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I suppose both "how much" and "how long" can be used to talk about time. However, "how much" is usually (if not always) followed by the word "time" while "how long" is not. Consider the following:

How long should I wait?

How much time do we have?

 

Answer 2

Till/Until when do you want to continue/(go on)?