Question
An elephant can do a work as fast as two horses ‘A’
and ‘B’ can do it by working together. If horse ‘A’ alone can complete the work in 27 hours and horse ‘B’ in 54 hours, then find the time taken by elephant to complete the work.Solution
Let the total work = 54 units Efficiency of horse who can complete the work in 27 hours = 54/27 = 2 units/hour Efficiency of horse who can complete the work in 54 hours = 54/54 = 1 units/hour Therefore, time taken by both horses to complete the work together = 54/(2 + 1) = 18 hours Therefore, time taken by the elephant to complete the work = 18Â hours
 The Prime Minister Shri Narendra Modi inaugurated the Gandhi Solar Park in which country in September , 2019?
The United Nations estimated the number of poor people in India to be around _______ million in 2019.
What is BREXIT?
Who among the following is the author of the book ‘On Writing: A Memoir of the Craft’?
What was the fate of Bahadur Shah Zafar, the last Mughal Emperor, after the revolt was suppressed?Â
Who is the ex-officio Chairman of the Rajya Sabha?
In recent financial reports, what key metric stood out for Singapore Airlines?Â
According to the Economic Survey Report of 2017- 18, what was the GST(Goods and Service Tax) weighted average collection in (%) ?
The Veda Samaj was established in ______.
During the period 2019-2023, which country was identified by the Stockholm International Peace Research Institute (SIPRI) as the top arms importer in th...
