I got quite a few answers right, but it took too long.
I answered a lot of questions correctly, but I took too much time.
ーI got quite a few answers right, but it took too long.
「結構正解できたけど、かなり時間がかかった。」
got quite a few answers right で「結構正解できた」
it took too long. で「時間がかかりすぎた」
ーI answered a lot of questions correctly, but I took too much time.
「たくさんの質問を正しく答えたけど、かなり時間がかかった。」
answered a lot of questions correctly で「たくさんの質問を正しく答えた」＝「結構正解できた」
I took too much time.「かなりの時間を要した」＝「時間がかかりすぎた」とも言えます。
ご参考まで！
カナダ 
