Question
‘A’ alone can complete a work in 65 hours. ‘A’
started the work alone and left after working on it for 40 hours. If ‘B’ completed the rest of the work in 25 hours then find the time taken by ‘A’ and ‘B’ together to complete the whole work.Solution
Let the total work = 260 units Then, efficiency of ‘A’ = (260/65) = 4 units/hour Work completed by ‘A’ alone in 40 hours = 4 × 40 = 160 units Remaining work = 260 – 160 = 100 units So, efficiency of ‘B’ = 100/25 = 4 units/hour Therefore, combined efficiency of ‘A’ and ‘B’ = 4 + 4 = 8 units/hour So, time taken by ‘A’ and ‘B’ together to complete the work = (260/8) = 32.5 hours
In a blockchain network, what are "nodes"?
What is the function of a router?
Which of the following components is used to amplify an analog signal?
How do you print the value of a variable ‘x’ in Python?
Which storage technology provides high-speed, non-volatile data storage but is volatile and temporary in nature?
In Go, what is the purpose of a goroutine?
Default value of boolean variable in an array
Which of the following is a characteristic of a public blockchain?
At which layer of the OSI model do hardware devices like switches primarily operate?
Which method is commonly used for error detection at the Data Link Layer?
Relevant for Exams:
