Aden and Brad can do a piece of work in 18 days. Brad can Cody can do it in 24 days and Cody and Aden can do it in 36 days. If Aden, Brad, Cody work together, in how many days will they finish the work?	Choose the most appropriate option:
A) 10 days	B) 12 days	C) 14 days	D) 16 days	E) 17 days
(Aden + Brad)’s 1 day’s work = 1/18   (Brad + Cody)’s 1 day’s work = 1/24   (Cody + Aden)’s 1 day’s work = 1/36   Therefore, 2 (Aden + Brad + Cody)’s 1 day’s work = 1/18 + 1/24 + 1/36   = (4 + 3 + 2)/72   = 9/72   = 1/8   (Aden + Brad + Cody)’s 1 day’s work = 1/2 × 8 = 1/16   Therefore, Aden, Brad, Cody together will complete this work in 16 days. ANSWER : 16 days
<result>D</result>
Aden and Brad can do a piece of work in 18 days. Brad can Cody can do it in 24 days and Cody and Aden can do it in 36 days. If Aden, Brad, Cody work together, in how many days will they finish the work?