yes I could as an answer to 'Could you?'

[ademoglu]

Hi,

Can we use 'Yes, I could' or 'No, I couldn't' as an answer to the requests, for example,

A: Could you lend me five pounds until tomorrow?
B: Yes, I could. / No, I couldn't.

Thanks.

 

[teechar]

Yes, I could.

Be careful as that could be considered a flippant response. A more natural answer would be, e.g., "Yeah sure", "Yes, of course" or "Absolutely".

No, I couldn't.

That works.

 

[jutfrank]

Sorry. I can't.