MBA Exam

If Ramu and Krishna work on alternate days to complete a work, then the work gets completed in exactly 24 days. If R and K denote the number of days required by Ramu and Krishna respectively to complete the work independently, then how many ordered pairs of integral values of R and K are possible?

1) 14
2) 8
3) 15
4) 7

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MBA Other Question
The number of integral values of x for which (5x - 1) < (x + 1)2 < 7x - 3 is

1) 0
2) 1
3) 2
4) 3
 Four people walking along the circumference of millennium park (circular in shape) walk at 100 mts/min, 120 mts/min, 160 mts/min and 200 mts/min respectively. The circumference of the park is 76800 mts. After how long will they be at the starting together if they have started all of the same time?

1) 3840 mins
2) 384 min
3) 38400 min
4) 384000 mins