Question

36 men can do a piece of work in 12 days in how many days 9 men can do the same work
i want very clearly in inverse and direct proportion

Answer 1

men is inversely proportional to days
m1×d1 = m2×d2
36 × 12 = 9 × d2
d2 = 4 × 12
d2 = 48.
Therefore, they require 48 days

Answer 2

as the no of mens decrease the no of days will increase
it is the inverse proportion
no of days =108 days