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Quantitative Aptitude

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Work and Time

Question
18 out of 30
 

18.   A  does  3/5th of  a work  in  10  days. He  then  calls  in B and  they  together complete the  work  in 4 days. How long would B alone have taken to complete the work?



A  25 days  
B  29 days      
C  48 days      
D  21 days      
E  None of These

Ans. A A --- work in 10 day

A does whole work in

(A+B) do work in 4 day

(A+B) do whole work in =

B alone = (50/3)*10 / (50/3-10) = (50/3)/20/3 => 25 Days

Work and Time Flashcard List

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