Amit and Ananthu can do a work in 15 days and 45 days respectively. Amit started the work and left after 3 days. Ananthu took over and completed the work. In how many days was the total work completed?  Choose the correct answer:
A) 28 days
B) 30 days
C) 33 days
D) 35 days
E) 39 days
Amit’s one day’s work= 1/15   Amit’s 3 day’s work = 1/15 *3 = 1/5   Work left= 1-1/5 = 4/5   Ananthu’s one day’s work= 1/45   Ananthu can do work in = 4/5 *45= 
<gadget id="calculator">4/5 *45</gadget>
<output>36</output>
36 days   So total days= 36+3= 
<gadget id="calculator">36+3</gadget>
<output>39</output>
39 days   ANSW39 daysR:39 days
<result>E</result>
Amit and Ananthu can do a work in 15 days and 45 days respectively. Amit started the work and left after 3 days. Ananthu took over and completed the work. In how many days was the total work completed?