SATHEE: Quantitative Aptitude Ques 132

Quantitative Aptitude Ques 132

Question: A and B can do a piece of work in 30 and 36 days, respectively. They began the work together but A leaves after some days and B finished the remaining work in 25 days. After how many days did A leave?

Options:

A) 6

B) 11

C) 10

D) 5

Show Answer

Answer:

Correct Answer: D

Solution:

A’s one day’s work $ =\frac{1}{30} $ and B’s one day’s work $ =\frac{1}{36} $

$ \therefore $ $ (A+B)’s $ one day’s work $ =\frac{1}{30}+\frac{1}{36}=\frac{11}{180} $ 25 day’s work of $ B=\frac{25}{36} $

$ \therefore $ Remaining work $ =1-\frac{25}{36}=\frac{11}{36} $ A and B can complete work $ \frac{11}{36} $ in $ \frac{11}{36}\div \frac{11}{180}=5,days $ So, A leaves after 5 days.

Quantitative Aptitude Ques 131

Quantitative Aptitude Ques 133

Quantitative Aptitude Ques 132

Question: A and B can do a piece of work in 30 and 36 days, respectively. They began the work together but A leaves after some days and B finished the remaining work in 25 days. After how many days did A leave?

Options:

Answer:

Solution:

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