Direction to solve:

Each of the questions given below consists of two statements numbered I and II given below it. Please read the questions carefully and decide whether the data provided in the statement(s) is / are sufficient to answer the given question.


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1.

$X$ alone can complete a work in $12$ days. How many days will $X,Y,Z$ together take to complete the work ?.

I. $X$ and $Y$ together can complete the work in $3$ days.

II. $Y$ and $Z$ together can complete the work in $6$ days.


A) I alone sufficient while II alone not sufficient to answer

B) II alone sufficient while I alone not sufficient to answer

C) Either I or II alone sufficient to answer

D) Both I and II are not sufficient to answer

E) Both I and II are necessary to answer



2.

Ram and Raj together can complete a task in $7$ days. Raj alone can do it in $20$ days. What part of the work was carried out by Ram?

I. Ram completed the job alone after Ram and Raj worked together for $5$ days.

II. Part of the work done by Ram could have been done by Raj and Ravi together in $6$ days.


A) I alone sufficient while II alone not sufficient to answer

B) II alone sufficient while I alone not sufficient to answer

C) Either I or II alone sufficient to answer

D) Both I and II are not sufficient to answer

E) Both I and II are necessary to answer



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