select descuento from empresa where empMadre='372948' and id_emp=296select descuento from empresa where empMadre='372948' and id_emp=296select descuento from empresa where empMadre='372948' and id_emp=296select descuento from empresa where empMadre='372948' and id_emp=21select descuento from empresa where empMadre='372948' and id_emp=20