Formal:
* De trente à cinquante: This is the most literal and formal translation.
* Entre trente et cinquante: This is also formal and means "between 30 and 50".
Informal:
* Trente à cinquante: This is a more casual way to say it.
* De 30 à 50: This is also informal and uses the numbers instead of writing them out.
Specific situations:
* Trente-cinq à cinquante: If you want to specify a range from 35 to 50, you can use this phrase.
* Trente-cinq ans à cinquante ans: If you're talking about ages, you would add "ans" after the numbers.
Example:
"I am looking for a car that costs between 30,000 and 50,000 euros."
* Formal: Je recherche une voiture qui coûte entre trente mille et cinquante mille euros.
* Informal: Je cherche une voiture qui coûte 30 000 à 50 000 euros.