Bonjour,
Answer:
1:30 PM
Il est une heure et demie.
Step-by-step explanation:
"demi" or "demie"
In the example, "demi" (
) half succeeds the noun "heure" , so it changes according to the gender of the noun. ( "heure" : feminine ) → "demie"
other example : Il a un an et demi ( he is one year and a half )
"un an" is masculine → "demi"
But, we would write "une demi-heure" ( because here "demi" is part of a compound noun. "demi" before a noun "demi" is always invariable )