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 9 hours and horse ‘B’ in 18 hours, then find the time taken by elephant to complete the work.Solution
Let the total work = 18 units Efficiency of horse who can complete the work in 9 hours = 18/9 = 2 units/hour Efficiency of horse who can complete the work in 18 hours = 18/18 = 1 units/hour Therefore, time taken by both horses to complete the work together = 18/(2 + 1) = 6 hours Therefore, time taken by the elephant to complete the work = 6Â hours
The Maharashtra government has declared which ancient artworks in Ratnagiri as protected monuments?
Which Indian state observes the Chapchar Kut festival in March, commemorating the conclusion of the jhum cultivation process?
Who has been roped as the brand ambassador for the brand Fire - Boltt?
Where was the only nuclear power station Uttar Pradesh was established?
Guru Ravidas of Sikh religion was born in which city of Uttar Pradesh?
Who topped Bloomberg’s list of the Top 10 Richest Families in Asia in 2025?
Which two countries are partnering with Nagaland for the Hornbill Festival 2024?
Which Indian classical singer, known as the 'Queen of Thumri', hails from Uttar Pradesh?
Which country has approved the omicron vaccine recently?
The 21st edition of bilateral naval Exercise Varuna began on 16th January, 2023 it is between India and which other country?
