Question
An elephant can do a work as fast as two horses
lsquo;Arsquo; and lsquo;Brsquo; can do it by working together. If horse lsquo;Arsquo; alone can complete the work in 15 hours and horse lsquo;Brsquo; in 30 hours, then find the time taken by elephant to complete the work.Solution
Let the total work = 30 units Efficiency of horse who can complete the work in 15 hours = 30/15 = 2 units/hour Efficiency of horse who can complete the work in 30 hours = 30/30 = 1 units/hour Therefore, time taken by both horses to complete the work together = 30/(2 + 1) = 10 hours Therefore, time taken by the elephant to complete the work = 10 hours
In Budget 2023-24, it is estimated that if Uttarakhand received One rupee as Revenue, then arrange the receiving in increasing order in that One rupee:<...
Who will host the 2028 Summer Olympics?
What is purchasing power parity (PPP)
Which city in India is also known as the 'Pink City'?
The Indian literary award âSahitya Akademi Awardâ was instituted in which year.
GIS stands for
What is the age limit for the Chief Information Commissioner (CIC)?
According to the ancient writer Nunez, what were the primary roles of women in Vijayanagar society?
1. Cooking
2. Household chores
...
______ is the author of the book âA little book of Indiaâ.
Which one out of the following is not a directive principle of state policy?
