5 minutes, boil together. 
SASMO 2016 P2 Q7  It takes 5 mintues to boil an egg. What is the least amount of time it takes to boil 3 eggs? 
Options:
[1] $$8$$minutes 
[2] $$12$$minutes 
[3] $$15$$minutes 
[4] $$18$$minutes 
[5] None of the above 