Three quarters' walk

People wouldn't understand a three quarters walk. Say a 45 minute walk.

Thank you. In writing, should it be 'a 45-minute walk' or ' a 45 minutes' walk' ?

The Chinese lousy English test has a kind of focus on the dash or ' things.

'a forty-five minute walk'

Thank you again.

I have searched the writing pattern and found this link:



According what is deemed correct there, should your way be

'a forty-five-minute walk' ?

I would write it the way I have written it but can't say 100% that I'm right. Why not start another post and see who answers it. There will be the teachers in the States answering these posts later.

Thank you.

A forty-five-minute walk. A 45-minute walk.
A walk of 45 minutes.

You keep the hyphen (not a "dash" but a hyphen) when there are two words before "minute" the same way you would with one: a fifteen-minute walk.