IBPS Government Jobs Exams Numerical Ability Boats and Streams

A boat can travel 4.2 km upstream in 14 min. If the respective ratio of speed of the boat in still water and speed of the steam is 7:1. How much time will the boat take to cover 17.6 km downstream?
A) 52 min B) 44 min C) 48 min D) 36 min E) 54 min

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IBPS Other Question

A bag contains 5 black balls, 6 red balls and 3 white balls. If two balls are picked at random what is the probability that either both are black or both are white in colour?
A) 3/7 B) 2/7 C) 3/14 D) 1/7 E) 5/14 Ganesh went to the office at the speed of 60 km/hr while returning to his home he covered the half of the distance at the speed of 10 km/hr, but suddenly he realized that he was getting late, so he increased the speed and reached the home by covering rest half of the distance at the speed of 30 km/hr. The average speed of the Ganesh in the whole length of journey is:
A)5.67 km/hr B)24 km/hr C)22.88 km/hr D)5.45 km/hr