If A can do a work in 8 days and B can do the same work in days,in how many days A and B together can finish the work  Choose the correct choice.
A) 3 3/7	B) 4 3/7	C) 5 3/7	D) 6 3/7	E) None of these
no of days taken to finish the work=8*6/(8+6)   Instead of solving this directly take the LCM of 8 and 6   8*6/(8+6)=LCM(8,6)/(LCM(8,6)/8 + LCM(8,6)/6)=24/(3+4)=24/7=3 3/7   3 3/7nswer 3 3/7
<result>A</result>
If A can do a work in 8 days and B can do the same work in days,in how many days A and B together can finish the work