Discussion :: Time and Work
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A, B and C can complete a piece of work in 24, 6 and 12 days respectively. Working together, they will complete the same work in:
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Answer : Option C
Explanation :
Formula: If A can do a piece of work in n days, then A's 1 day's work =\(\frac { 1 } { n }\)
A + B + C)'s 1 day's work =\([ \frac { 1 } { 24 } \)+\( \frac { 1 } { 6 } \)+\( \frac { 1 } {12 } \)]=\( \frac { 7 } { 24 } \)
Formula: If A's 1 day's work =\(\frac { 1 } { n }\)then A can finish the work in n days.
So, all the three together will complete the job in\( (\frac { 24 } {7 } )\)days=3\( \frac { 3 } {7}\)days
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