Cinquante minutes.
'Vingt minutes'
cinq minutes.
dix minutes
vingt-cinq minutes
trente cinq minutes
Quarante cinq minutes
"Thirty to fifty" is "trente à cinquante" in French.
cinquante
In French, you would say "cinq heures cinquante du soir" to express 5:50 PM.
Cinquante euros
il a cinquante ans.
You can say "dans les années 50" in French to refer to the 1950s decade.