'Su' is ambiguous: it could be 'his', 'her', or 'your' (polite form)
Bearing this in mind, the sentence means:
'When/at what time does your/his/her mother serve dinner/the meal?'
Para que sirve
Que hora es?= What time is it?
La hora de la comida.Aunque en español existe diferencia al designar cada período en que se toman alimentos --- (although in Spanish there are differences signifying the period when the meal is taken):El desayuno = breakfast.El almuerzo = lunchLa comida --- mealtimeLa merienda = tea, approximatelyLa cena = dinner*El entremés, que es comida ligera que se sirve antes del plato principal --- "entrée"*La colación, también comida ligera, como frutas, verduras, leche, yogur, gelatina, etc., que se ingiere entre comidas --- (light dish such as fruit, greens, milk, jelly, etc., taken between meals (probably'snack' in English).
B I U_ S-x2 x2 =
The translation of "que hora estudias" to English is "what time do you study."
comida
To serve the fast?
butilhioscina
1)Comida boa, comida gostosa, comida apetitosa.2) (comida que não está estragada) (not spoiled, eatable,)
At what time?
para que sirve el decanoato de nandrolona
¿Qué hora es? = What time is it?