Koliko su ove farmerke i da li imaju popust?

In Serbian, koliko can mean both how much and how many, depending on context.

In Koliko su ove farmerke?, the context is shopping, so koliko su means how much are these jeans? or more literally what is their price?

Serbian often leaves out the idea of cost if it is clear from context. So instead of saying something like How much do these jeans cost?, Serbian commonly just says How much are these jeans?

Because farmerke is grammatically plural.

• je = is (singular)
• su = are (plural)

So:

• Koliko je ova majica? = How much is this T-shirt?
• Koliko su ove farmerke? = How much are these jeans?

Even though jeans is one item in meaning, in Serbian farmerke behaves like a plural noun.

Farmerke is the normal word for jeans, and it is used in the plural.

That is why the demonstrative must also be plural:

• ove = these (for plural feminine nouns here)
• farmerke = jeans

So ove farmerke means these jeans.

Ova farmerka would mean this one jean/trouser leg-like item, which is not how you normally refer to jeans in Serbian.

Yes, in normal usage farmerke is treated as a plural noun, very much like jeans in English.

That is why you get plural agreement:

• ove farmerke
• nove farmerke
• farmerke su skupe

This kind of noun is often called a plural-only noun or a noun normally used in the plural.

Da li is a very common way to form a yes/no question in Serbian.

Here:

da li imaju popust? = do they have a discount?

It introduces the question in a neutral, standard way.

You will often see:

• Da li imate...? = Do you have...?
• Da li je...? = Is it...?
• Da li su...? = Are they...?

So in this sentence, the speaker is asking a second question: whether the jeans are discounted.

Yes. Serbian can also form yes/no questions by intonation or by changing word order a bit, but da li is one of the clearest and most standard ways.

For example, instead of:

Da li imaju popust?

you may hear:

Imaju li popust?

Both mean Do they have a discount?

The version with da li is often especially useful for learners because it is easy to build and very common in everyday speech.

That is simply the natural Serbian expression.

• imaju = they have
• popust = discount

So da li imaju popust? literally means do they have a discount?

In English, depending on context, we might also say:

• Are they on sale?
• Is there a discount on them?
• Do they come with a discount?

But Serbian commonly uses the have a discount structure.

Grammatically, imaju is plural and most naturally refers to ove farmerke.

So the idea is:

Do these jeans have a discount?

In real-life English, we might think of the store as giving the discount, but Serbian often phrases it as the item having a discount.

I means and.

It connects the two questions:

1. Koliko su ove farmerke? = How much are these jeans?
2. Da li imaju popust? = Do they have a discount?

Combined:

Koliko su ove farmerke i da li imaju popust?
= How much are these jeans, and do they have a discount?

To some extent, yes, but the given order is natural and standard.

Koliko su ove farmerke i da li imaju popust? sounds very normal.

You could hear slight variations in speech, but beginners should stick with this structure because it is clear and idiomatic.

For example, you might also hear a speaker pause between the two parts:

Koliko su ove farmerke? I da li imaju popust?

That separates them into two full questions instead of one combined sentence.

The sentence is already perfectly normal, but in a shop you could make it a bit softer by adding polite wording such as izvinite or molim vas.

For example:

Izvinite, koliko su ove farmerke i da li imaju popust?
= Excuse me, how much are these jeans, and do they have a discount?

or

Koliko su ove farmerke, molim vas, i da li imaju popust?

These additions make the question sound more polite in customer-service situations.

Farmerke is pronounced approximately far-MER-ke.

The word is related to farmer, historically through a borrowing path connected with denim/jeans terminology, but in modern Serbian farmerke simply means jeans.

So learners should treat it as a normal everyday word for jeans, without worrying too much about the literal history.

Yes, but popust is one of the most useful and common words.

• popust = discount
• na sniženju = on sale / discounted

So you could also ask:

Da li su na sniženju?
= Are they on sale?

That is another very natural shop phrase.