60 boys can complete a work in 24 days.how many men need to complete twice the work in 20 days	Choose the correct option:
A) 144 B) 170 C) 180 D) 190 E) 200

Rationale: "one man can complete the work in 24 * 60 = 1440 days = one time work to complete the work twice it will be completed in let m be the no . of worker assign for this therefore the eqn becomes m * 20 = 2 * 1440 m = 144 workers answer : a"
Answer: A