In a garment industry, 12 men working 9 hours per day complete a piece of work in 10 days. To complete the same work in 12 days, working 15 hours a day, the number of men required is:	Choose the correct choice from the following.
A) 4	B) 5	C) 6	D) 7	E) 9
Explanation :   Let the required number of men be x.   Less days, More men (Indirect Proportion)   More working hrs per day, Less men (Indirect Proportion)   7ays 8 : 10   Working Hrs 15 : 9 :: 12 : x   =&gt; 12 x 15 x x = 10 x 8 x 12   =&gt; x = 10 x 9 x 12 / (12 x 15)   =&gt; x = 7   Answer : 7
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In a garment industry, 12 men working 9 hours per day complete a piece of work in 10 days. To complete the same work in 12 days, working 15 hours a day, the number of men required is: