Find the number of days required by z number of workers, working z hours a day to complete z units of work, if x workers, working x hours a day complete x units of work in x days. Choose the correct answer
A) x3/z	B) x2/z	C) x3/z2	D) x2/z2	E) None of these
Explanation :   M1D1T1W2 = M2D2T2W1   Where, M – number of men   D – number of days   T – time duration   W – amount of work   x*x*x*z = z*D2*z*x   D2 = x2/z   Answer : x2/z
<result>B</result>
Find the number of days required by z number of workers, working z hours a day to complete z units of work, if x workers, working x hours a day complete x units of work in x days.