16 men can complete a work in 12 days, 24 children can complete the same work in 18 days,

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16 men can complete a work in 12 days, 24 children can complete the same work in 18 days, 12 men and 8 children started working and after 8 days, 3 more children joined them. How many days will they now take to complete the remaining work ?
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