16 men can complete a piece of work in 30 days. In how many days can 20 men complete that piece of work?	Choose the correct choice from the following answers.
A) 55 days
B) 77 days
C) 20 days
D) 24 days
E) 44 days

Rationale: "16 * 30 = 20 * x = > x = 24 days answer : d"
Answer: D