IBPS Government Jobs Exams Numerical Ability Boats and Streams

Speeds of Boat A and B in still water are in the ratio of 3:2 Rate of current is 10 Km/hr. Both Boats started from Point P to point Q downstream at the same time. After Boat B reaching Point Q, in return journey, it is powered by engine due to which the speed of the boat in still water is increased by 70%, while returned Boat A returned to Point Q as usual. Both the boats returned back to point P at the same time. Then what is the speed of Boat A?
A) 20 Km/hr B) 30 Km/hr C) 40 Km/hr D) 50 Km/hr E) Cannot be determined

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IBPS Other Question

The speeds of the Sohan and Rohan are 50 km/h and 30 km/h respectively. Initially Sohan is at a place N and Rohan is at a place M. The distance between M and N is 710 km. Sohan started his journey 3 hours earlier than Rohan to meet each other. If they meet each other at a place R somewhere between M and N, then the distance between R and N is
A) 210 km B) 500 km C) 430 km D) 620 km E) None of these 3 men can do a piece of work in 12 days, 5 women in 8 days and 20 children in 3 days. In how many days can a man, a woman and a child working together complete the piece of work ?
A) 15 days B) 16 days C) 12 days D) 14 days E) None of these