Time and Work Practice Test 5 with solutions

Question : 3 of 30

Marks: +1, -0

A and B together can do a piece of work in 6 days and A alone can do the same work in can B 10 days. How many days can B alone finish the same job?

Solution:

Work done by A and B together in one day =

1/6

Work done by A in one day =

1/{10}

Work done by B in one day
=

1/6 - 1/{10}

{10-6}/{60}

4/{60}

1/{15}

So, B alone can complete the work in 15 days.

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