A can do a piece of work 30 days. B can do work in 45 days. In how many days they will complete the work together?	Choose the correct choice from the following answers: A) 15 days B) 16 days C) 19 days D) 17 days E) 18 days
LCM = 90, Ratio= 30:45=2:3   No of days= 90/(2 + 3) = 90/5= 
<gadget id="calculator">90/5</gadget>
<output>18</output>
18 days   ANSW18 daysR:18 days
<result>E</result>
A can do a piece of work 30 days. B can do work in 45 days. In how many days they will complete the work together?