SATHEE: Quantitative Aptitude Ques 1398

Quantitative Aptitude Ques 1398

Question: Alok, Armaan and Arun can do a job in 24, 30 and 60 days, respectively. In how many days can Alok do the Work, if he is assisted by Armaan on one day and Arun on the next day alternately. How long the work would take to finish?

Options:

A) 12 days

B) 15 days

C) 18 days

D) 16 days

Show Answer

Answer:

Correct Answer: B

Solution:

(Alok + Armaan)’s 1st day work $ =\frac{1}{24}+\frac{1}{30}=\frac{3}{40} $ (Alok + Arun)’s 2nd day work $ =\frac{1}{24}+\frac{1}{60}=\frac{7}{120} $ 2 day’s work $ =\frac{3}{40}+\frac{7}{120}=\frac{2}{15} $ days Whole work is done $ =2\div \frac{2}{15} $ $ =\frac{2\times 15}{2}=15days $

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Quantitative Aptitude Ques 1398

Question: Alok, Armaan and Arun can do a job in 24, 30 and 60 days, respectively. In how many days can Alok do the Work, if he is assisted by Armaan on one day and Arun on the next day alternately. How long the work would take to finish?

Options:

Answer:

Solution:

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