The phrase "answer whether it was" is correct and usable in written English.
It can be used when asking someone to provide a response or clarification about a specific situation or event.
Example: "Please answer whether it was the right decision to proceed with the project."
Alternatives: "respond if it was" or "indicate whether it was".
The US government has refused to answer whether it was behind the shutdown.
For example, more than two-thirds of people interviewed either said that no drilling was taking place on public lands or that they didn't have enough information to answer whether it was or not.
It sounds to me as if Asimo is being put out to pasture, since the Honda rep would not answer whether it was still under development.
"I don't want to brag, but I'm not a lawyer," he said, noting he couldn't answer whether the president had the power to pardon himself, and therefore couldn't answer whether it was an impeachable offense.
"We're in limbo, we want to have an answer, whether it's positive or negative".
GREEN -- I'm not going to have -- I'm not going to answer whether it's divisive, because I wasn't the one who ran on it.
"Studying something in the presence of an answer, whether it's conscious or not, influences how you interpret the question," Dr. Bjork said.
And the whole issue of rising expenses raises a question not easy to answer: whether it is better to spend money now to save money later.
When he was asked a question, one knew, if nothing else, that one's attention would be held by the answer, whether it's about allowing churches to harbor undocumented immigrants or, as he seemed to be suggesting, effectively renouncing much of our national debt.
"For our part, we put our faith in the Australian people, and we know that their answer, whether it is yes or no, will be the right answer," he said, labelling same-sex marriage a "fundamental change" to a thousands-of-years-old institution.
CIT relates to combinatorial analysis whose objective is to answer whether it is possible to organize elements of a finite set into subsets so that certain balance or symmetry properties are satisfied (Stinson 2004).
