Time and Work Practice Test 1 with solutions

Question : 8 of 40

Marks: +1, -0

Working together, A, B, and C can do a work in

3 9/{11}

days, whereas A and B together can do the same work in

4 2/3

days. Find the time taken by C alone to do the same work.

Solution:

Work done by A, B and C in one day =

{11}/{42}

Work done by A and B in one day =

3/{14}

So, work done by C in one day =

{11}/2-3/{14}

{11-9}/{42}

2/{42}

1/{21}

So, time taken by C = 21 days.

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