A can complete a certain job in 7 days. B is 40% more efficient than A. In how many days can B complete the same job?
Choose the correct choice from the following choices:
A) 5  B) 6.25  C) 7  D) 7.5  E) 4.8
Let, Total Work Unit = 70 Units   A can finish in 7 days = 70 unit work   i.e. A can finish in 1 days = 10 unit work   i.e. B can finish in 1 days = 10+(40/100)*10= 
<gadget id="calculator">10+(40/100)*10</gadget>
<output>14</output>
14 unit work   Days in which B will complete the work alone= 70/14= 
<gadget id="calculator">70/14</gadget>
<output>5</output>
5 days   5nswer: Option 5
<result>A</result>
A can complete a certain job in 7 days. B is 40% more efficient than A. In how many days can B complete the same job?