Question
'Alex,' 'Ben,' and 'Charlie' can individually complete a
task in 40, 60, and 100 days, respectively. They decide to work together, but there's a unique pattern: 'Alex' works every day, 'Ben' joins in on odd-numbered days, and 'Charlie' on even-numbered days. Calculate the time required to finish the entire task following this alternating work schedule.Solution
ATQ, Let the total work be 600 units. {LCM (40, 60 and 100)} So, efficiency of 'Alex' = 600 ÷ 40 = 15 units/day And efficiency of 'Ben' = 600 ÷ 60 = 10 units/day And efficiency of 'Charlie' = 600 ÷ 100 = 6 units/day So, work done in every 2 days = (15 × 2) + 10 + 6 = 46 units/day So, work done in 26 days = (26/2) × 46 = 598 units And time taken by 'Alex' and 'Ben' together to finish the remaining work on last day = {(600-598)/(15+10)} So, total time taken = 26 + (2/25) =26(2/5)
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Malevolent
...In the following questions, out of the four alternatives, choose the one which best expresses the meaning of the given word as your answer.
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An ornament fastened to clothing with a hinged pin
Choose the one which best expresses the meaning of the given word .
Clandestine
Suppress
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- Each of the following questions consists of two words which have a relationship to each other. This is followed by four pairs of related words. Choose the ...
 Select the word which means the same as the group of words given.
causing great damage or suffering
A person interested in collecting, studying and selling of old things .
