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Aptitude · Q24

Time And Work

Competitive Exams · Aptitude · question 24

Q24

A and B working together completed a job in 5 days. If A works twice as efficiently as he actually did and B works 1/3 of actual efficiency, the work would have completed in 3 days. Find the for A to complete the job alone.

A and B working together completed a job in 5 days. If A works twice as efficiently as he actually did and B works of actual efficiency, the work would have completed in 3 days. Find the for A to complete the job alone.
A.
B.
Answer
C.
D.
E.
None of these

Answer: Option B

Solution

Answer: Option B
Solution:
One Day's work of A and B together,


When A works with twice efficiency,Then,


on solving equations (i) and (ii), we get