takes

[wowenglish1]

I'd like to know the answer.
It took me 3 hours ( ? )
1. to slove the problem.
2. sloving the problem.

If 1.2 are correct, I wonder if there is a little difference.

 

[Dawood Usmani]

I'd like to know the answer.
It took me 3 hours ( ? )
1. to slove the problem.
2. sloving the problem.

If 1.2 are correct, I wonder if there is a little difference.

1. It took me three hours to slove the problem.:tick:
2. It took me three hours solving the problem. :cross:
Hope this helps>
Dawood :up:

 

[Anglika]

But you can also say "I spent three hours solving the problem".