Question
A boat takes 12 hours longer to
cover 378 km upstream than it does to cover the same distance downstream. The speed of the stream is 12 km/h. What is the distance the boat travels downstream in 13 hours?Solution
ATQ, Let the speed of boat in still water= 'd' Kmph 378/(d-12) – 378/(d+12)=12 378 (d+12-d+12)=12(d -144) 378 (24)=12(d -144) 756= d -144 d =900 d=30 Downstream speed of boat = 30+12 = 42 Kmph Required answer = 42×13 = 546 Km
Which two tech giants have partnered with ONDC to enhance its reach to small businesses?
Which of the following are most suitable indicators of SO2 pollution in environment?
According to Census of India 2011, what was the total population of India (approx)?
When RBI decides to decrease the repo rate, money supply will _________ .
Who was the Governor General of India at the time of the Sepoy Mutiny?
In the game of Ice hockey, during normal play how many players are there in each team on the ice at any one time to compete?
The ‘Loor Dance’ is a famous dance form of which state?
In what architectural style is the Ram Mandir in Ayodhya designed?
Appeals and representations are used in_________ communication
When was a Madrasa opened in Kolkata to promote the study of Arabic, Persian and Islamic law?
