Start learning 50% faster. Sign in now
Let the upstream and downstream speeds of the boat are x km/h and y km/h. So according to question: 42/x + 81/y = 8 And, 48/x + 54/y = 7 Let 1/x = a and 1/y = b So 42a + 81b = 8 ………. (i) And 48a + 54b = 7 …….. (ii) Solving (i) and (ii) we get a = 1/12 and b = 1/18 So x = 12 and y = 18 So the upstream and downstream speeds of the boat are 12 km/h and 18 km/h respectively. So the speed of the boat in still water = (12 + 18)/2 = 15 km/h So the time taken by the boat to cover 90 km in still water = 90/15 = 6 hours
Which of the following is true about Neo banking in India?
Statement 1: Neo banks are digital-only banks that operate exclusively ...
Under the proposed framework for adoption of an expected loss-based approach for provisioning by banks in India, which of the following is NOT a key req...
Regarding the National Career Service Project, consider the following statements:
1. It is a government-run recruitment agency.
Revaluation reserve are included as Tier II capital at a _______ discount for the purpose of capital adequacy ratio.
According to the Union Budget 2023-24, consider the following statements.
1. Pradhan Mantri PVTG Development Mission will provide PVTG families...
When was SIDBI established?
Prime Minister recently lauded the initiative of ‘Suposhit Maa’ - a scheme to ensure nutritional support to pregnant women. It was launched by ____...
What percentage of the project cost is covered for design projects under MSME-Innovative for Micro Enterprises?
Which of the following is classified as a Special Mention Account (SMA-0) under the revised guidelines?
As per Section 409 of the Companies Act, 2013, the President of the NCLT shall be a person who is or has been a Judge of a High Court for ________.