Symbiosis National Aptitude Test SNAP 2018 Paper

Question : 63 of 130

Marks: +1, -0

A is able to do a piece of work in 10 days and B can do the same work in 15 days. If they can work together for four days, what is the fraction of work left?

Validate

Solution:

Amount of work done in one day when A and B work together
=

1/{10}+1/{15}

{3+2}/{30}

5/{30}

1/6

Amount of work done in 4 days
=

4×1/6

4/6

2/3

Remaining work
=

1-2/3

1/3

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