If bitten by a black mamba what is the mortality rate?

Almost 100% Black Mamba venom is extremely potent and can kill a full grown adult in less than half an hour. Since most snake bites happen in remote localities where the nearest hospital is atleast an hours drive, the mortality rate of mamba bites are pretty high. Nearly 100% of all victims are killed.

They are the deadliest snake species when it comes to death % of snake bite victims.