Question
‘A’ alone can complete a work in 12 days. ‘B’
alone can complete the same work in 20 days. If ‘A’ and ‘B’ work together for 6 days, then the remaining work can be completed by ‘A’ alone in how many days?Solution
Let the total amount of work = 60 units {LCM of 12 and 20} Then, efficiency of ‘A’ = 60/12 = 5 units/day Efficiency of ‘B’ = 60/20 = 3 units/day Combined efficiency of ‘A’ and ‘B’ = 5 + 3 = 8 units/day Work completed by ‘A’ and ‘B’ together in 6 days = 6 × 8 = 48 units Remaining work = 60 – 48 = 12 units Time taken by ‘A’ alone to complete the remaining work = 12/5 = 2.4 days
What was the reported rise in SBI’s net interest income (NII) in Q2FY26?
Which country’s King Willen -Alexander opened the world's largest canal lock, Zeesluis IJmuiden.
- Which state emerged as the overall champion in the 38th National Games 2025?
Which two space missions will collaborate for solar observation campaigns in 2025?
Recently JSW Steel signed a memorandum of understanding (MoU) with which of the folloiwng German engineering and technology company, for exploring decar...
Which public sector bank has announced the launch of its UPI Interoperable Digital Rupee mobile application that allows users to pay with digital curr...
In which month will the next RBI MPC meeting take place after June 2025?
Which organization of India is responsible to develop a strong global connect and focus on the needs of the Indian economy as well as to serve as an int...
The International Potato Center’s South Asia regional centre will be set up near which Indian city?
Who is the recently appointed Chairman and Managing Director of NHPC Ltd?
Relevant for Exams:
