A and B can do a piece of work in 60 days and 60 days respectively. They work together for 10 days and B leaves. In how many days the whole work is completed?	Choose the most appropriate option:
A) 30days
B) 35days
C) 40days
D) 45days
E) 50days
Explanation:   (30days+B)’s 10 days work = 10[1/60+1/60]=10[1+1/60]= 1/3   30days complete remaining work in   1/3*60= 
<gadget id="calculator">  1/3*60</gadget>
<output>20</output>
20   Total work= 10+20= 
<gadget id="calculator">10+20</gadget>
<output>30</output>
30days   30daysnswer: Option 30days
<result>A</result>
A and B can do a piece of work in 60 days and 60 days respectively. They work together for 10 days and B leaves. In how many days the whole work is completed?