A can complete a work in 30 days B can do the same work in 36 days A starts working alone and after ...........

Quantitative Aptitude ( CCS) Time and work

A can complete a work in 30 days B can do the same work in 36 days A starts working alone and after working for 5 days .A leaves the work and B carries the work forward.in how many days will B do the remaining work?

22 days

28 days

30 days

36 days

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Explanation:

A = 1/30, B = 1/36

In 5 days A complete = 5*1/30 = 1/6 work
Remaining work =1-1/6= 5/6
B will do the remaing work = 5*36/6 = 30 days

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Alternative Method:

Total work=180 units

in 5 days A complete =6 x 5=30 units

Remaining work= 180-30=150 units

B will do 150 unit with efficiency of 5 unit per day in =150/5=30 days

By: Pranav Gupta

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ASHOK

i have attempted but it showing unattempted

Dheeraj Kumar

In Question it was asked in how many days B will do remaining work and not how many days B took to complete the work. wrong option given as per question.

Yadav

wrong question

Pratyush

Those who are getting answer 25 assumed that A&B both worked form5 days but read question carefully, it is written that first 5 days done by A only then B joined.

Munesh Kumari