Question
The time taken by ‘A’ to build a wall alone is 40%
more than the time taken by him to build it along with ‘B’. ‘B’ will take how much percent more time to build the same wall than the time taken by him to build it along with ‘A’?Solution
Let the work ‘A’ and ‘B’, can do in 1 day be ‘a’ units and ‘b’ units, respectively. Let they takes ‘p’ days to build the wall, together Therefore, Total work = (a + b) × p units …….. (1) According to the question, Time taken by ‘A’ to build the wall alone = 1.4p days Therefore, total work = 1.4p × a units….. (2) From equation (1) and (2), we get 2.5b = a Therefore, total work to be done = (a + b) × p = 3.5bp units Time taken by 'B' to build the wall = 3.5bp/b = 3.5p days Therefore, required percentage = (3.5p – p)/p} × 100 = 250% more time
Which tectonic fault was identified as facilitating the eastward movement of the Tibetan Plateau, increasing seismic activity in the region?
How many Vision 2030 Action Plans have been prepared under the Tribal Village Vision 2030?
Which city in Nepal was declared the country's first 'healthy city' by WHO?
Which of the following bonds have a variable rate of interest?
As per Economic Survey 2025–26, which factor is identified as the “binding constraint” for India’s Artificial Intelligence (AI) ambitions?
...What significant change will occur after the amalgamation of Aditya Birla Finance Ltd. with Aditya Birla Capital Ltd.?
What is money Laundering?
Who has won prestigious German Peace Prize 2023?
Who is the author of the autobiography titled "Prajala Kathe, Naa Atma Katha"?
Which pair won gold medal in SL3- SL4 category in Para- Badminton International- 2023?
Relevant for Exams:
