answer purpose

answer (one's) purpose

To be useful for a particular task. If that's the only paintbrush we have, I think it will answer my purpose.
See also: answer, purpose
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

answer someone's purpose

 and serve someone's purpose
to fit or suit someone's aim or goal. This piece of wood will answer my purpose quite nicely. The new car serves our purpose perfectly.
See also: answer, purpose
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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