In a company 200 persons, working 6 hours per day complete 1/3 rd of the work in 7 days. Employee number of additional persons, working 4 hrs per day, required to complete the remaining work in 15 days is :	Choose the correct choice from the following: A) 60 B) 80 C) 90 D) 70 E) 50
Explanation :   Solution: Let the number of persons completing the work in 15 days be x.   Work done = 1/3, remaining work = (1-1/3) = 2/3.   less hours per day, more men required (IP)   more work, more men required (DP)   more days, less men required (IP)   hours per day 4 : 6   work 1/3 : 2/3 } : : 200 : x   days 15 : 7   .'. 4*1/3 * 15*x = 6 * 2/3 * 7 * 200   =&gt; 60x = 16800   =&gt; x = 16800/60= 
<gadget id="calculator">16800/60</gadget>
<output>280</output>
280.   Additional men required= (280-200)= 
<gadget id="calculator">(280-200)</gadget>
<output>80</output>
80.   Answer : 80
<result>B</result>
In a company 200 persons, working 6 hours per day complete 1/3 rd of the work in 7 days. Employee number of additional persons, working 4 hrs per day, required to complete the remaining work in 15 days is :