Latest Huawei Aptitude Question SOLUTION: Q. There is a work which can be completed by A with 12 days and B by 18 days. A and B works together for 3 days and B left. After that how many days for A to complete the work?

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Q. There is a work which can be completed by A with 12 days and B by 18 days. A and B works together for 3 days and B left. After that how many days for A to complete the work?

Asked In Huawei (12 years ago)

Solved jyotish r Read Solution (6)

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Read Solution (6) :

jyotish r  (12 years ago)

work done by A per day=1/12

work done by B per day=1/18

work done by A and B per day=1/12+1/18=5/36

work done by A and B for 3 days=5*3/36=5/12

work remasining=1-5/12=7/12

. After that A takes 7days to complete the work

Is this solution Helpfull? Yes (26) | No (3)  

Ratan Lal Jat  (12 years ago)

Work done by A in 1 day = 1/12
Work done by B in 1 day = 1/18
Work done by both (A +B) in 1 day =(1/12+1/18) = 5/36
As per question A and B both work together for 3 days.
So Work done by both (A+B) in 3 days = 3*(5/36) = 5/12
Work remaining for A (because B is left) =1-(5/12) =7/12
Work done by A in 1 day = 1/12
Therefore A finishes remaining work in 7 days.
The answer is 7 days

Is this solution Helpfull? Yes (6) | No (1)  

Ashish K Singh  (11 years ago)

one day work of A = 1/12
one day work of B = 1/18
one day work of A+B = 5/32

B left after 3 days

Work completed before b left = 5/12
work left = 7/12

A alone will take 7 days

Is this solution Helpfull? Yes (3) | No (1)  

ambuja mohanty  (9 years ago)

Work done by A in 1 day = 1/12
Work done by B in 1 day = 1/18
Work done by both (A +B) in 1 day =(1/12+1/18) = 5/36
As per question A and B both work together for 3 days.
So Work done by both (A+B) in 3 days = 3*(5/36) = 5/12
Work remaining for A (because B is left) =1-(5/12) =7/12
Work done by A in 1 day = 1/12
Therefore A finishes remaining work in 7 days.
The answer is 7 days

Is this solution Helpfull? Yes (1) | No   

akshay krishnan  (7 years ago)

answer is 720. Because, 6 is multiplied by 4 to give 24. Next, 24 is multiplied by 5 to give 120. Then definitely next 120 must be multiplied by 6 to give 720. Therefore, answer is 720

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HONEY KUMARI  (7 years ago)

answer will be seven days.

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