Can you kill a mushmom at level 40 in Maplestory and how long would i take to kill it solo

Mushmom is a very strong monster for lvl 40. i killed it within 2 minutes with my dexless thief (dexless) 5 mins
thief (Not dexless) 10 minutes
Warrior impossible, unless its a dex warrior (20 mins)
Bowman (Strless) 8 minutes
bowman (Regular) 13 minutes
Cleric 15 minutes
Wizard 10 minutes
Aran 20 mins
Pirate 10 mins


HINT
Always jump when he uses his attack


ANOTHER HINT
HE MIGHT DROP ILLBIS AT A 5% chance