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Multiple Choice Questions

Ashu started working alone at his normal efficiency but after 5 days of starting he found that he ha...........

Quantitative Aptitude (CCS) Time and work

Directions : Read the below data carefully and answer the following questions :

The line graph indicates the no. of days taken by six boys to complete a work.

The chart below shows the number of days taken by six girls to complete a work.

Ashu started working alone at his normal efficiency but after 5 days of starting he found that he has done only 25% work so to complete the remaining work on time by how much percentage he should increase his efficiency?

12.5%

15%

10%

20%

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Explanation:

Ashu’s 1 day’s work …180/15 = 12 units
In 5 days he should have done …60 units
but he did……………….180/4 = 45 units
so remaining work = 135 units so complete it in 10 days he should do 135/10 = 13.5 units per day
therefore increased efficiency … 13.5 – 12 = 1.5 >> 1.5*100/12 = 12.5%

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