65 boys can complete a work in 30 days.how many men need to complete twice the work in 20 days
Choose the correct answer
A) 160	B) 170	C) 180	D) 195	E) 200

Rationale: "one man can complete the work in 30 * 65 = 1950 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 * 1950 m = 195 workers answer : d"
Answer: D