Time and Work Practice Test 2 with solutions

Question : 25 of 40

Marks: +1, -0

A can lay railway track between two given stations in 16 days and B can do the same job in 12 days, with the help of C they did the job in 4 days only. Then C alone can do the job in:

10 days
$9 3/5$ days
$9 2/3$ days
$9 1/5$ days

Validate

Solution:

C's 1 day's job =

1/4 - (1/{16}+1/{12})

1/4 - 7/{48}

5/{48}

Hence, C alone can do the job in

{48}/5

9 3/5

days.

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