If daily wages of a man is double to that of a woman, how many men should work for 10 days to earn Rs.14400? Given that wages for 40 women for 30 days are Rs.21600.	Choose the correct choice from the following answers:
A) 12
B) 14
C) 16
D) 20
E) 40

Rationale: "explanation : wages of 1 woman for 1 day = 21600 / 40 ã — 30 wages of 1 man for 1 day = 21600 ã — 2 / 40 ã — 30 wages of 1 man for 10 days = 21600 ã — 2 ã — 10 / 40 ã — 30 number of men = 14400 / ( 21600 ã — 2 ã — 10 / 40 ã — 30 ) = 144 / ( 216 ã — 20 / 40 ã — 30 ) = 40 answer : option e"
Answer: E