Question
40 men take 15 days to finish some work. If the work is
to be finished in 8 days, then how many additional men should be hired?Solution
Let the total work be 'w' units and efficiency of each man be 'e' units/day Let number of men required to finish the work in 8 days be 'm'. ATQ; W/(40 x 15 x e) =Â W/(8 x e x m) Â m = 75 So, 75 - 40 = 35 more men should be hired.
80    81.5    83.5     ?     89      92.5
...152    142    122   ?     52    2
What value should come in the place of (?) in the following number series?
4, 10, 22, 46, ?, 190
44, 42, 46, 38, 54, ?
What will come in place of the question mark (?) in the following series?
7, 20, 59, 176, 527, 1580, ?
6    11    32    111    ?   2345   14100
...What will come in place of the question mark (?) in the following number series?
21, 42, 67, 96, ?, 166
7, 176, ?, 378, 427, 452
...120, 120, ?, 360, 900, 2700
What value should come in the place of (?) in the following number series?
7, 16, ?, 137, 560, 2813
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