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?
Pick one:
A) 18
B) 20
C) 22
D) 24
E) 25
x ----- 9   (x + 10) --- 6   x * 9 = (x + 10)6   x = 20   ANSWER 20
<result>B</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?