M4maths Maths Puzzle Numerical Ability Boats and Streams

speed of a boat in upstream motion is 75 per cent of its speed in downstream motion. If the boat travels 8 km in downstream and 10 km upstream in 5 hour 20 minutes. how much time will take the same boat take to travel 10 km downstream and 8 km upstream?

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M4maths Other Question
tan^-1(sec x+tan x) abhishek deposited certain amount in 3 banks vijaya, sbi and pnb at an interest rate of 7%, 8% and 9% p.a. after completion 1 year. abhishek received rs 3620 as an interest from all 3 banks together. if he has deposited 40% more in sbi compared to vijaya and 30% less in compared to pnb. then find the amount deposited by him in sbi bank account?