A work which could be finished in 9 days was finished 3 days earlier after 10 more men joined. The number of men employed was?
Choose the correct choice from the following answers: A) 8 B) 9 C) 10 D) 20 E) 30
x ------- 6   (x + 10) ---- 3   x * 6 = (x + 10)3   x = 10   ANSWER:10
<result>C</result>
A work which could be finished in 9 days was finished 3 days earlier after 10 more men joined. The number of men employed was?