69.
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X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work?
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|
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Answer: Option A
Explanation:
Work done by X in 8 days =
|
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1
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x 8
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=
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1
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.
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40
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5
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Remaining work =
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1 -
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1
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=
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4
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.
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5
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5
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Now,
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4
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work is done by Y in 16 days.
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5
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Whole work will be done by Y in
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16 x
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5
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= 20 days.
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4
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X's 1 day's work =
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1
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, Y's 1 day's work =
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1
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.
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40
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20
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(X + Y)'s 1 day's work =
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1
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+
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1
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=
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3
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.
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40
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20
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40
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Hence, X and Y will together complete the work in
|
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40
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= 13
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1
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days.
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3
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3
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Title : Time And Work Q69
Description : 69. X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take ...
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