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Quantitative Aptitude

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Work and Time

Question
20 out of 25
 

X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last?



A 6 days
B 10 days
C 15 days
D 20 days
E None of These

Ans. B X 20

Y 12

Let total work be 60

So, x 3 unit

Y 5 unit

In 4 day X can do 3 x 4 = 12 unit

So they complete work in = 6 days

So work complete in 6 + 4 = 10 days

Work and Time Flashcard List

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