A can do a job in 16 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ------- days?  Options.
A) 28 4/5 days	B) 25 4/5 days	C) 22 4/5 days	D) 20 4/5 days	E) 21 4/5 days
1/16 + 1/30 = 46/480 =23/240   240/23=11 2/5 *2 = 22 4/5 days   ANSWER:22 4/5 days
<result>C</result>
A can do a job in 16 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ------- days?