A and B can together finish a work in 30days. They worked together for 20days and then B left. After another 20days, A finished the remaining work. In how many days A alone can finish the job?
Choose the correct option
A) 20  B) 30  C) 60  D) 50  E) 80
A+B 20days work = 20*1/30 +  20= 
<gadget id="calculator">+  20</gadget>
<output>20</output>
20*1/30= 2/3   Remaining work = 1-2/3 = 1/3   1/3 work is done by A in 20days   whole work will be done by A in 20*3= 
<gadget id="calculator">20*3</gadget>
<output>60</output>
60days   Answer is 60
<result>C</result>
A and B can together finish a work in 30days. They worked together for 20days and then B left. After another 20days, A finished the remaining work. In how many days A alone can finish the job?