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) 22 B) 20 C) 99 D) 77 E) 655
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?