Question
‘A’ alone can complete a work in 18 days. ‘B’
alone can complete the same work in 25 days. If ‘A’ and ‘B’ work together for 5 days, then the remaining work can be completed by ‘A’ alone in how many days?Solution
Let the total amount of work = 450 units {LCM of 18 and 25} Then, efficiency of ‘A’ = 450/18 = 25 units/day Efficiency of ‘B’ = 450/25 = 18 units/day Combined efficiency of ‘A’ and ‘B’ = 25 + 18 = 43 units/day Work completed by ‘A’ and ‘B’ together in 5 days = 5 × 43 = 215 units Remaining work = 450 – 215 = 235 units Time taken by ‘A’ alone to complete the remaining work = 235/25 = 9.4 days
Who has been appointed as mentor by Afghanistan cricket team for ICC Men's Cricket World Cup 2023?
Which day commemorates the assassination of former Indian Prime Minister Rajiv Gandhi?
Which city will host the G20 Agricultural group meeting under India’s G20 presidency in June 2023?
Which ministry has secured the top position in both order value and order quantity among the 56 ministries/departments participating in the Government-e...
Which of the following are the characteristics of Tropical Deciduous Forests:
1. The most widespread in India
2. Density of these forests ...
Consider the following;
Which of the above is correctly matched?
Where did the 'Mahaparinirvana' of Mahatma Buddha take place?
Goa Shipyard Ltd signed an MoU for capacity building and collaboration in ship design and construction with which country?
Lord Curzon introduced the Indian Universities Act in which year?
For the success of Chandrayaan – 3 mission, who has been awarded with the International Astronautical Federation (IAF) World Space Award?
Relevant for Exams:
