Sun	Mon	Tue	Wed	Thu	Fri	Sat
23	24	25	26	27	28	1
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23	24	25	26	27	28	29
30	31	1	2	3	4	5

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Multiple Choice Questions

Efficiency of A is 25 more then B and B takes 25 days to complete a piece of work A started a work a...........

Quantitative Aptitude (HAS) Time and work

Efficiency of A is 25% more then B and B takes 25 days to complete a piece of work. A started a work alone and then B joined her 5 days before actual completion of the work. For how many days A worked alone?

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Explanation:

Explanation :
Efficiency (A : B) = 5 : 4
Number of days(A : B) = 4x : 5x = 4x : 25
∴ Number of days required by A to finish the work alone = 4x
= 4 x 5 = 20.
A and B work together for last 5 days = 5 x 9 = 45%
Efficiency of A = 5% and B’s efficiency = 4%
∴ No. of days taken by A to complete 55% work = 55/5 = 11days

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