Answers

2016-01-30T18:57:18+05:30
Lan makes a wall in 18 days.So, in one day he can make 1/18 of the wall.Similarly, Mick can do 1/9 of the wall. So, in one day if we add,
1/18+1/9=3/18.
Therefore they can complete 1/6 of the wall in one day.
plz mark as Brainliest.

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2016-01-30T19:09:17+05:30
Please see the attachment.
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please mark my answer as the best!