Auriel's Bow Enchantment

[ChaoticInferno]

In the enchantment, the bow is said to do 10 sun damage (It says 20 but is, in truth, 10: Skyrim:Auriel's Bow - UESPWiki) and does triple damage to the undead. Now, let's say I have Auriel's Bow at 80 damage. Would the bow with the enchantment be doing 80 damage + 30 sun damage against a draugr for instance, or 240 damage + 20 sun damage (sun damage is doubled against undead) against the same draugr? Thanks!

 

[xsneakyxsimx]

I could be wrong, but it may refer to the bonus damage (Sun Damage) being tripled. But, I have no idea really.