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Let the total work = 300 units Then, efficiency of ‘A’ = (300/60) = 5 units/hour Work completed by ‘A’ alone in 40 hours = 5 × 40 = 200 units Remaining work = 300 – 200 = 100 units So, efficiency of ‘B’ = 100/20 = 5 units/hour Therefore, combined efficiency of ‘A’ and ‘B’ = 5 + 5 = 10 units/hour So, time taken by ‘A’ and ‘B’ together to complete the work = (300/10) = 30 hours
Which all statements are correct about Sorting
Which one of the following given statements possibly contains the error?
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Which of the following SQL queries is used to find the second highest salary from an employee table?
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class Stack:
def __init__(self):
s...
Which of the following is a non-relational database used for handling large volumes of diverse data types in Big Data environments?
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public Bank...