Question
A motor boat covers a certain distance downstream in a
river in 1 hour. It covers the same distance upstream in 1 hour and 30 minutes. If the speed of water is 3 km/h, then the speed of the boat in still water is:Solution
Let the speed of boat in still water be x km/hr and the distance be y km. Rate downstream = (x + 3) km/hr Rate upstream = (x – 3) km/hr According to the question, y/(x + 3) = 1 --- (i) y/(x – 3) = 3/2 --- (ii) On dividing equation (i) by (ii), (x – 3)/(x + 3) = 1/(3/2) = 2/3 3x – 9 = 2x + 6 x = 9 + 6 = 15 kmph
The Passport Index has published its latest update, revealing that India's Mobility Scores has fallen & has India experienced the largest global drop ...
How much DAP fertilizer will India import from Saudi Arabia for the year 2025–26?Â
Which state tableau won one of the top three positions in the “Best Tableaux – States/Union Territories” category at the Republic Day Parade 2026?...
The Kimberley Process Certification Scheme (KPCS) was launched in:
Who is appointed as next IMF’s Chief Economist to succeed Gita Gopinath?
The Global Teacher Prize was started in which year?
The entire acquisition process under RBI’s acquisition financing guidelines must be completed within how many months of the acquisition agreement?
In which city the World Bank has launched its first 'Road Safety Project' in South Asia?
What is the estimated nominal GDP growth for India for FY 2025–26 as per the latest SBI report?
Which bank raised the highest amount via infrastructure bonds in FY25?
