Learn Finnish: Paita maksaa kaksikymmentäviisi euroa ja kymmenen senttiä. - The shirt costs twenty-five euros and ten cents.

In Finnish, numbers from 21 to 99 are written together as a single word. It breaks down literally into kaksi (two) + kymmentä (tens) + viisi (five).

Why is the middle part of kaksikymmentäviisi written as kymmentä instead of kymmenen (ten)?

Because it literally means 'two of tens'. Whenever you have a multiple of ten (20, 30, 40, etc.), the word kymmenen (ten) changes to its partitive form, kymmentä. So 20 is kaksikymmentä and 30 is kolmekymmentä.

Why do we use euroa and senttiä instead of a regular plural?

In Finnish, any number greater than one requires the noun that follows it to be in the partitive singular case. So, the base word euro becomes euroa, and sentti becomes senttiä.

I remember maksaa meaning 'to pay'. Does it also mean 'to cost'?

Yes! Maksaa is a very common verb that means both 'to pay' and 'to cost'. You can tell which one it is from the context. Here, 'The shirt pays' wouldn't make sense, so it translates to 'The shirt costs'.