Choose the correct phrase to complete the eccentric inventor's frantic demands.

I am on the brink of a scientific breakthrough! I just need _____ to calibrate the flux capacitor.

The correct answer is another three weeks.

Usually, the determiner "another" is only used with singular nouns. However, as an exception, we can use "another" before a plural noun if it is preceded by a number or a quantifier (like "few"). This treats the phrase as a single, collective unit of time, distance, or money.