Поставьте глагол в правильную временную форму. I don"t know how much

1).I dont know how much the single ticket costs.  

Present Simple. We add the ending s to the main verb. It refers to the word ticket, which can be substituted with the pronoun it (the third person singular).

2). My friend will be ten next Saturday.

Future Simple. We use the auxiliary verb will and the verb to be without to. The marker of this tense is next Saturday.