IBPS Government Jobs Exams Numerical Ability Boats and Streams

The ratio of time taken by a boat to cover (x+4) km in upstream to that of time taken to cover (x+20) km in still water is 4:5. If the ratio of speed of boat in downstream to that of stream is 5:1 and the sum of time taken by the boat to cover (x-5) km in upstream to that in downstream is 8 hours then find the speed of boat in downstream?
A) 1 km/hr B) 3 km/hr C) 4 km/hr D) 5 km/hr E) 8 km/hr

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IBPS Other Question

Average age of all the employees in a company is 32 years. 60% of the employees in the company are female and the ratio of the average age of all female to average age of all male employees is 6 : 7. Find the average age of all the male employees if there are total 50 employees in the company.
A)35 years B)42 years C)28 years D)49 years E)30 years There are two containers P and Q. P contains 56 kg of salt and Q contains 36 kg of sugar. From P 24 kg of salt is taken out and poured into Q. Then 20 kg of the mixture from Q is taken out and poured into P. Find the ratio of final quantity of salt to sugar in container P.
A) 10/3 B) 20/3 C) 5/3 D) 2/3 E) 40/3