Student discount

Hi,

I’ll be flying through emirates in a month or so. I’ve availed the emirates students discount especially for the extra luggage of 10 kgs it allows along with the already existing 25kgs. Which means 10+25=35 kgs. My question is can I split the luggage into 2 different luggages ? Like 17.5+17.5. Or do I need to specifically take a baggage of 25 kgs and another of 10 kgs?