Do marriage relations last long in your country or couples divorce each other frequen

[tufguy]

Do marriage relations last long in your country or couples divorce each other frequently? What is the average time that a couple spends (what shall I use "spend" or "spends) together before getting divorced?

Please check my sentences.

 

[GoesStation]

Do marriages usually last a long time in your country, or do a lot of couples get divorced? ("Do couples divorce each other frequently" sounds like one couple may get more than one divorce.)

What's the average duration of a marriage that ends in divorce? (Your sentence sounds like all couples eventually divorce.)

 

[andrewg927]

Your question "What is the average time that a couple spends together before they get divorced?" could be appropriate to ask a Hollywood celebrity.

I am not a teacher.

 

[GoesStation]

Do marriages usually last a long time in your country, or do a lot of couples get divorced?

I should have mentioned that the two possibilities are not mutually exclusive. It's possible that the average marriage ends in divorce after forty years.

 

[bubbha]

What is the average time that a couple spends (what shall I use "spend" or "spends")...

In general:

"spend" in the UK
"spends" in the US

In British English, collective nouns are usually treated as plural, whereas they are usually singular in American English.