34 men can complete a piece of work in 18 days. In how many days will 17 men complete the same work? Choose the correct answer:  A) 36  B) 26  C) 97  D) 26  E) 19

Rationale: "explanation : let the required number of days be a . then , less men , more days ( indirect proportion ) 17 : 34 : : 18 : a 17 x a = 34 x 18 a = ( 34 x 18 ) / 17 a = 36 answer : a"
Answer: A