Final answer:
The informal way to say 'all of you like' in Spanish is 'Os gusta'. It is the second person plural form of the verb 'gustar'.
Step-by-step explanation:
The informal way to say 'all of you like' in Spanish is 'Os gusta'. This phrase is used when addressing a group of people familiarly or informally, specifically in Spain. It is the second person plural form of the verb 'gustar' which means 'to like'. For example, if you want to say 'All of you like pizza', you would say 'Os gusta la pizza'.
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