Question
C is 50% more efficient than D. Together, they can
finish a task in 12 days. How many days will D alone take to complete the task?Solution
Let D’s efficiency be x. Then, C’s efficiency is 1.5x. Together, their combined efficiency is x + 1.5x = 2.5x. Now, total work = 2.5x × 12 = 30x. D’s time to complete the work alone = total work ÷ D's efficiency = 30x ÷ x = 30 days. Final Answer: (b) 30 days
Which is the largest uranium producing country in the world?
Which state lies directly south of Nagaland?
Pulicat Lake Bird Sanctuary is located in which state of India?
Which of the following cities was added in the list of UNESCO World Heritage sites in 2019?
On which coast of Africa is the Congo located?Â
Which of the following sports personality recently awarded the prestigious Padma Bhushan?
What was the reported inflation rate in India for August 2024?
NingolChakkouba festival is celebrated in which state?
In what year was the Khalsa Panth founded by Guru Gobind Singh?
In which of the following state Nag River flow?
