so i missed this lesson and i cant seem to figure out what to do, ill just simplify the word problem....basically.

person 1 complete job in m-5 minutes

person 2 completes the job in m minutes

person 3 completes the job in same amount of time as person 2

together they take 3.23 minutes to complete the job... how long does person 2 take to finish the job?

tanks in advance