A can do a work in 5 days. B is 50% more efficient than A. How many days does B alone take to do the same job?	Select the correct option
A) 12/7
B) 13/3
C) 11/2
D) 9/4
E) 10/3
Ratio of times taken by A and B = 150:100 = 3:2   suppose B alone to take x days to do the work   then, 3:2::5:x   3x= 2*5= 
<gadget id="calculator">2*5</gadget>
<output>10</output>
10/3 days   correct option is 10/3
<result>E</result>
A can do a work in 5 days. B is 50% more efficient than A. How many days does B alone take to do the same job?