A contract is to be completed in 56 days if 104 persons work, each working at 8 hours a day. After 30 days, 2/5 of the work is completed. How many additional persons should be deployed so that the work will be completed in the scheduled time, each person’s now working 9 hours a day.	Choose the correct choice
A) 160	B) 150	C) 24	D) 56	E) 75
Explanation:   Persons worked = 104   Number of hours each person worked per day = 8   Number of days they worked = 30   Work completed =25   Remaining days = 56 - 30= 
<gadget id="calculator">56 - 30</gadget>
<output>26</output>
26   Remaining Work to be completed=1−2/5=3/5   Let the total number of persons who do the remaining work =x   Number of hours each person needs to be work per day = 9   More days, less persons (indirect proportion)   More hours, less persons (indirect proportion)   More work, more persons (direct proportion)   Hence we can write as   (days)30:26   (hours)8:9   (work)35:25 }::x:104   ⇒30×8×35×104 =26×9×2/5 × x   ⇒x=30×8×3/5×104/26×9×2/5   =30×8×3×104/26×9×2   =30×8×104/26×3×2   =30×8×4/3×2   =5×8×4=160   Number of additional persons required = 160 - 104= 
<gadget id="calculator">160 - 104</gadget>
<output>56</output>
56   Answer: Option 56
<result>D</result>
A contract is to be completed in 56 days if 104 persons work, each working at 8 hours a day. After 30 days, 2/5 of the work is completed. How many additional persons should be deployed so that the work will be completed in the scheduled time, each person’s now working 9 hours a day.