36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work?
Choose the correct choice from the following answers:
A) 12 B) 18 C) 22 D) 24 E) 26

Rationale: "solution let the required number of days be x . then , less men , more days ∴ 27 : 36 : : 18 : x ⇔ 27 × x = 36 × 18 ⇔ x = 36 x 18 / 27 x = 24 . answer d"
Answer: D