After a fight Hayate, Nagi heads to the apartment complex to hang out.  But her “little sister” is the only one home.  This might be Nagi’s chance to find out what Ruri’s real goal is. 
It sure solves your problems.
Pero sin duda resuelve tu problema.
Pues soluciona todos tus problemas.
Os seus ao menos
 dá para resolver.