Start learning 50% faster. Sign in now
Let the speed of the boat in still water by x km/hr and speed of the stream be y km/hr. As per the question Time taken by the boat to cover 90 km in still water = (90/x) = 6 x= 15km/hr Time taken by the boat to travel 90 km in upstream = (90/15-y) = 9 = 90 = 135-9y = 9y = 45 = y = 5 km/hr. Change in speed of boat and stream Boat = 15*(2/3) = 10 km/hr Stream = 5*(6/5) = 6 km/hr. Speed downstream = 10+6 = 16 km/hr. Time taken by boat to cover 176 km = 176/16 = 11 hr. Upstream speed = 10-6 = 4 km/hr. Time taken by boat to cover 76 km = 76/4 = 19 hrs Required difference = 19hr – 11 hr. = 8 hrs.
Which organization will route the ADB loan to promote green infrastructure in India?
The Ministry of Electronics and Information Technology will set up the Bharat Semiconductor Research Centre in the public-private partnership (PPP) mode...
Recently which international organisation has approved a USD 96.3 million (about Rs 770 crore) loan to fund safe drinking water and sanitation project i...
What is the objective of the $175 million loan signed between the Government of India and the Asian Development Bank (ADB) for the Madhya Pradesh road i...
Which city in Nepal was declared the country's first 'healthy city' by WHO?
Coal India's production grew by what percentage in the current fiscal year (up to September 12, 2024)?
Which of the following statements about Swami Prasad Maurya's new political party is/are correct?
1. Swami Prasad Maurya resigned from the Samajw...
The Ministry of Home affairs completed the ‘Mother Tongue Survey of India’ with a file video of ____ languages in the country.
Where was the 8th Joint Group of Customs (JGC) meeting between India and Bhutan held?
How much has the centre disbursed as interest-free 50-year capex loans to states out of the sanctioned amount of Rs 1.1 trillion so far in the current f...